Merge branch '6725-optimize-restic-backup-params' into 'master'

prune uses --max-unused unlimited

See merge request !120

plugins/transfer/restic.sh

 #!/bin/bash
 # ================================================================================
 #
-# TRANSFER :: PLUGIN - TEMPLATE
+# TRANSFER :: PLUGIN - RESTIC
 #
 # this script will be included in ../../transfer.sh
 #
@@ -17,6 +17,7 @@
 # 2022-10-21  ah    v0.7   simplify restic exec commands in _restic; remove --prune in check
 # 2022-11-04  ah    v1.0   one command for forget and prune; rename hooks
 # 2023-03-20  ah    v1.1   use vss for backup on MS Windows
+# 2024-01-23  ah    v1.2   prune uses --max-unused unlimited
 # ================================================================================
 
 # --------------------------------------------------------------------------------
@@ -186,10 +187,10 @@
         local _tag=$( _j_getvar ${STORAGEFILE} "${CFGPREFIX}tag")
         
         local _mycmd="forget \
-          ${ARGS_DEFAULT} \
           --tag $_tag \
           --group-by paths,tags \
           --prune \
+          --max-unused unlimited \
           --cleanup-cache"
 
         local _keep