Remove tmp_index_project_statistics_pipeline_artifacts_size
Summary
In https://gitlab.com/gitlab-org/gitlab/-/issues/412634 we added a temporary index to the project_statistics
table, tmp_index_project_statistics_pipeline_artifacts_size
.
This index can be removed now the backfill is complete.
Normally we'd wait until the following milestone (16.4) but the backfill was for .com only, so I think we can proceed immediately.
Edited by Vijay Hawoldar