Remove Test Lifecycle code

We are no longer using the Test Lifecycle code. We should go through and remove the code executing it. This would include the references in etc/evergreen.yml, buildscripts/fetch_test_lifecycle.py, buildscripts/update_test_lifecycle.py, and any other related files.

As a server engineer,
I want the test lifecycle code removed.
so that I don't have to spend time maintaining it.

AC

• etc/evergreen should not run any test_lifecycle related tasks.
• test lifecycle scripts (and tests for them) should be removed from mongo repository.