stack/erp5: Remove unneeded "mysql" argument in restoration script

This value is supposed to come from configuration file, which is already
implicitly provided inside used wrapper.

stack/erp5/buildout.hash.cfg

@@ -15,7 +15,7 @@
 # not need these here).
 [mariadb-resiliency-after-import-script]
 filename = instance-mariadb-resiliency-after-import-script.sh.in
-md5sum = 844d62cd6f9d6e3d1d78d52de2b72a49
+md5sum = c1f1083bf6c911a0e65dcb841fba327d
 
 [mariadb-slow-query-report-script]
 filename = mysql-querydigest.sh.in
@@ -23,7 +23,7 @@ md5sum = cfe6ab8ae54a521ecb269e9d9762cbeb
 
 [template-mariadb]
 filename = instance-mariadb.cfg.in
-md5sum = f868a5e1233f0b66d0c944accb3fc765
+md5sum = 01173ca2e47621eebd339d3734f9157b
 
 [template-kumofs]
 filename = instance-kumofs.cfg.in

stack/erp5/instance-mariadb-resiliency-after-import-script.sh.in

@@ -15,7 +15,6 @@ set -e
 mysql_executable='{{ mysql_executable }}'
 mariadb_data_directory='{{ mariadb_data_directory }}'
 mariadb_backup_directory='{{ mariadb_backup_directory }}'
-instance_directory='{{ instance_directory }}'
 pid_file='{{ pid_file }}'
 binlog_path='{{ binlog_path }}'
 server_executable='{{ server_executable }}'
@@ -71,7 +70,7 @@ fi
 echo "Importing data..."
 # Use latest dump XXX can contain funny characters
 dump=$(ls -r "$mariadb_backup_directory" | head -1)
-zcat "$mariadb_backup_directory/$dump" | $mysql_executable -u root --socket="$instance_directory/var/run/mariadb.sock"
+zcat "$mariadb_backup_directory/$dump" | $mysql_executable -u root
 RESTORE_EXIT_CODE=$?
 
 if [ $RESTORE_EXIT_CODE -eq 0 ]; then

stack/erp5/instance-mariadb.cfg.in

@@ -273,7 +273,6 @@ context =
   key mysql_executable binary-wrap-mysql:wrapper-path
   key mariadb_data_directory directory:mariadb-data
   key mariadb_backup_directory directory:mariadb-backup-full
-  key instance_directory buildout:directory
   key pid_file my-cnf-parameters:pid-file
   key binlog_path my-cnf-parameters:binlog-path
   key server_executable mysqld:rendered