Remove Google Code importer [RUN ALL RSPEC] [RUN AS-IF-FOSS]

What does this MR do?

Removes Google Code importer as described in #219049 (closed)

Related issue: #284657 (closed)

Screenshots (strongly suggested)

Before:

After:

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done