Use standard redis helpers

manifest.json

@@ -22,7 +22,7 @@
         "url": ""
     },
     "requirements": {
-        "yunohost": ">= 4.3.0"
+        "yunohost": ">= 11.2.12"
     },
     "multi_instance": true,
     "services": [

scripts/_common.sh

@@ -464,45 +464,3 @@ ynh_cleanup_ruby () {
         ynh_secure_remove --file="/etc/profile.d/rbenv.sh"
     fi
 }
-
-#=================================================
-# REDIS HELPERS
-#=================================================
-
-# get the first available redis database
-#
-# usage: ynh_redis_get_free_db
-# | returns: the database number to use
-ynh_redis_get_free_db() {
-	local result max db
-	result=$(redis-cli INFO keyspace)
-
-	# get the num
-	max=$(cat /etc/redis/redis.conf | grep ^databases | grep -Eow "[0-9]+")
-
-	db=0
-	# default Debian setting is 15 databases
-	for i in $(seq 0 "$max")
-	do
-	 	if ! echo "$result" | grep -q "db$i"
-	 	then
-			db=$i
-	 		break 1
- 		fi
- 		db=-1
-	done
-
-	test "$db" -eq -1 && ynh_die --message="No available Redis databases..."
-
-	echo "$db"
-}
-
-# Create a master password and set up global settings
-# Please always call this script in install and restore scripts
-#
-# usage: ynh_redis_remove_db database
-# | arg: database - the database to erase
-ynh_redis_remove_db() {
-	local db=$1
-	redis-cli -n "$db" flushall
-}