diff --git a/scripts/_common.sh b/scripts/_common.sh
index ec86ecb..0165afc 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -7,213 +7,6 @@ ynh_install_php --phpversion=7.2
 YNH_PHP_VERSION="7.2"
 extra_pkg_dependencies="php${YNH_PHP_VERSION}-bz2 php${YNH_PHP_VERSION}-imap php${YNH_PHP_VERSION}-gmp php${YNH_PHP_VERSION}-gd php${YNH_PHP_VERSION}-json php${YNH_PHP_VERSION}-intl php${YNH_PHP_VERSION}-curl php${YNH_PHP_VERSION}-apcu php${YNH_PHP_VERSION}-redis php${YNH_PHP_VERSION}-ldap php${YNH_PHP_VERSION}-zip php${YNH_PHP_VERSION}-mbstring php${YNH_PHP_VERSION}-xml php${YNH_PHP_VERSION}-sqlite3"
 
-
-# Remove the specific version of php used by the app.
-#
-# usage: ynh_install_php
-ynh_remove_php () {
-  # Get the version of php used by this app
-  local phpversion=$(ynh_app_setting_get $app phpversion)
-
-  # Remove the line for this app
-  sed --in-place "/$YNH_APP_INSTANCE_NAME:$phpversion/d" "/etc/php/ynh_app_version"
-
-  # If no other app uses this version of php, remove it.
-  if ! grep --quiet "$phpversion" "/etc/php/ynh_app_version"
-  then
-    # Purge php dependences for this version.
-    ynh_package_autopurge "php$phpversion php${phpversion}-fpm php${phpversion}-common"
-    # Remove the service from the admin panel
-    yunohost service remove php${phpversion}-fpm
-  fi
-
-  # If no other app uses alternate php versions, remove the extra repo for php
-  if [ ! -s "/etc/php/ynh_app_version" ]
-  then
-    ynh_secure_remove /etc/php/ynh_app_version
-  fi
-}
-ynh_delete_file_checksum () {
-	local checksum_setting_name=checksum_${1//[\/ ]/_}	# Replace all '/' and ' ' by '_'
-	ynh_app_setting_delete $app $checksum_setting_name
-}
-
- #=================================================
-    # CHANGE THE FAKE DEPENDENCIES PACKAGE
-    #=================================================
-
-    # Check if a variable $pkg_dependencies exists
-    # If this variable doesn't exist, this part shall be managed in the upgrade script.
-    if [ -n "${pkg_dependencies:-}" ]
-    then
-      # Define the name of the package
-      local old_package_name="${old_app//_/-}-ynh-deps"
-      local new_package_name="${new_app//_/-}-ynh-deps"
-
-      if ynh_package_is_installed "$old_package_name"
-      then
-        # Install a new fake package
-        app=$new_app
-        ynh_install_app_dependencies $pkg_dependencies
-        # Then remove the old one
-        app=$old_app
-        ynh_remove_app_dependencies
-      fi
-    fi
-
-    # Define the values to configure php-fpm
-#
-# usage: ynh_get_scalable_phpfpm --usage=usage --footprint=footprint [--print]
-# | arg: -f, --footprint      - Memory footprint of the service (low/medium/high).
-# low    - Less than 20Mb of ram by pool.
-# medium - Between 20Mb and 40Mb of ram by pool.
-# high   - More than 40Mb of ram by pool.
-# Or specify exactly the footprint, the load of the service as Mb by pool instead of having a standard value.
-# To have this value, use the following command and stress the service.
-# watch -n0.5 ps -o user,cmd,%cpu,rss -u APP
-#
-# | arg: -u, --usage     - Expected usage of the service (low/medium/high).
-# low    - Personal usage, behind the sso.
-# medium - Low usage, few people or/and publicly accessible.
-# high   - High usage, frequently visited website.
-#
-# | arg: -p, --print - Print the result
-#
-#
-#
-# The footprint of the service will be used to defined the maximum footprint we can allow, which is half the maximum RAM.
-# So it will be used to defined 'pm.max_children'
-# A lower value for the footprint will allow more children for 'pm.max_children'. And so for
-#    'pm.start_servers', 'pm.min_spare_servers' and 'pm.max_spare_servers' which are defined from the
-#    value of 'pm.max_children'
-# NOTE: 'pm.max_children' can't exceed 4 times the number of processor's cores.
-#
-# The usage value will defined the way php will handle the children for the pool.
-# A value set as 'low' will set the process manager to 'ondemand'. Children will start only if the
-#   service is used, otherwise no child will stay alive. This config gives the lower footprint when the
-#   service is idle. But will use more proc since it has to start a child as soon it's used.
-# Set as 'medium', the process manager will be at dynamic. If the service is idle, a number of children
-#   equal to pm.min_spare_servers will stay alive. So the service can be quick to answer to any request.
-#   The number of children can grow if needed. The footprint can stay low if the service is idle, but
-#   not null. The impact on the proc is a little bit less than 'ondemand' as there's always a few
-#   children already available.
-# Set as 'high', the process manager will be set at 'static'. There will be always as many children as
-#   'pm.max_children', the footprint is important (but will be set as maximum a quarter of the maximum
-#   RAM) but the impact on the proc is lower. The service will be quick to answer as there's always many
-#   children ready to answer.
-ynh_get_scalable_phpfpm () {
-    local legacy_args=ufp
-    # Declare an array to define the options of this helper.
-    declare -Ar args_array=( [u]=usage= [f]=footprint= [p]=print )
-    local usage
-    local footprint
-    local print
-    # Manage arguments with getopts
-    ynh_handle_getopts_args "$@"
-    # Set all characters as lowercase
-    footprint=${footprint,,}
-    usage=${usage,,}
-    print=${print:-0}
-
-    if [ "$footprint" = "low" ]
-    then
-        footprint=20
-    elif [ "$footprint" = "medium" ]
-    then
-        footprint=35
-    elif [ "$footprint" = "high" ]
-    then
-        footprint=50
-    fi
-
-    # Define the way the process manager handle child processes.
-    if [ "$usage" = "low" ]
-    then
-        php_pm=ondemand
-    elif [ "$usage" = "medium" ]
-    then
-        php_pm=dynamic
-    elif [ "$usage" = "high" ]
-    then
-        php_pm=static
-    else
-        ynh_die --message="Does not recognize '$usage' as an usage value."
-    fi
-
-    # Get the total of RAM available, except swap.
-    local max_ram=$(ynh_check_ram --no_swap)
-
-    less0() {
-        # Do not allow value below 1
-        if [ $1 -le 0 ]
-        then
-            echo 1
-        else
-            echo $1
-        fi
-    }
-
-    # Define pm.max_children
-    # The value of pm.max_children is the total amount of ram divide by 2 and divide again by the footprint of a pool for this app.
-    # So if php-fpm start the maximum of children, it won't exceed half of the ram.
-    php_max_children=$(( $max_ram / 2 / $footprint ))
-    # If process manager is set as static, use half less children.
-    # Used as static, there's always as many children as the value of pm.max_children
-    if [ "$php_pm" = "static" ]
-    then
-        php_max_children=$(( $php_max_children / 2 ))
-    fi
-    php_max_children=$(less0 $php_max_children)
-
-    # To not overload the proc, limit the number of children to 4 times the number of cores.
-    local core_number=$(nproc)
-    local max_proc=$(( $core_number * 4 ))
-    if [ $php_max_children -gt $max_proc ]
-    then
-        php_max_children=$max_proc
-    fi
-
-    if [ "$php_pm" = "dynamic" ]
-    then
-        # Define pm.start_servers, pm.min_spare_servers and pm.max_spare_servers for a dynamic process manager
-        php_min_spare_servers=$(( $php_max_children / 8 ))
-        php_min_spare_servers=$(less0 $php_min_spare_servers)
-
-        php_max_spare_servers=$(( $php_max_children / 2 ))
-        php_max_spare_servers=$(less0 $php_max_spare_servers)
-
-        php_start_servers=$(( $php_min_spare_servers + ( $php_max_spare_servers - $php_min_spare_servers ) /2 ))
-        php_start_servers=$(less0 $php_start_servers)
-    else
-        php_min_spare_servers=0
-        php_max_spare_servers=0
-        php_start_servers=0
-    fi
-
-    if [ $print -eq 1 ]
-    then
-        ynh_debug --message="Footprint=${footprint}Mb by pool."
-        ynh_debug --message="Process manager=$php_pm"
-        ynh_debug --message="Max RAM=${max_ram}Mb"
-        if [ "$php_pm" != "static" ]; then
-            ynh_debug --message="\nMax estimated footprint=$(( $php_max_children * $footprint ))"
-            ynh_debug --message="Min estimated footprint=$(( $php_min_spare_servers * $footprint ))"
-        fi
-        if [ "$php_pm" = "dynamic" ]; then
-            ynh_debug --message="Estimated average footprint=$(( $php_max_spare_servers * $footprint ))"
-        elif [ "$php_pm" = "static" ]; then
-            ynh_debug --message="Estimated footprint=$(( $php_max_children * $footprint ))"
-        fi
-        ynh_debug --message="\nRaw php-fpm values:"
-        ynh_debug --message="pm.max_children = $php_max_children"
-        if [ "$php_pm" = "dynamic" ]; then
-            ynh_debug --message="pm.start_servers = $php_start_servers"
-            ynh_debug --message="pm.min_spare_servers = $php_min_spare_servers"
-            ynh_debug --message="pm.max_spare_servers = $php_max_spare_servers"
-        fi
-    fi
-}
-
 # Install another version of php.
 #
 # usage: ynh_install_php --phpversion=phpversion [--package=packages]