Enable removing import data on failure by default

When import is failed, there is no need in collecting their
import data.

This MR enables the functionality by default, it has been
enabled globally for a while now.

Changelog: fixed

config/feature_flags/development/remove_import_data_on_failure.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/352156
 milestone: '14.8'
 type: development
 group: group::source code
-default_enabled: false
+default_enabled: true