[MM-28423] Implement ImportDelete job (#16588)

* Implement ImportDelete job

* Add missing translation

* Improve logging

* Avoid deleting the file in case of errors

i18n/en.json

@@ -1336,6 +1336,10 @@
     "id": "api.file.file_exists.app_error",
     "translation": "Unable to check if the file exists."
   },
+  {
+    "id": "api.file.file_mod_time.app_error",
+    "translation": "Unable to get last modification time for file."
+  },
   {
     "id": "api.file.file_reader.app_error",
     "translation": "Unable to get a file reader."