Do not delete site data when no tags (history)

[darkdh]

Test Plan:

Covered by automatic test

fix #7238

Auditors: @bsclfton, @bbondy

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).

[bbondy]

++ if there's no test for not deleting a history entry with tags though, then please add.

[bsclifton]

++