.github/pull_request_template: drop teuthology reference

It is not clear what role this has relative to the needs-qa label.

Signed-off-by: Sage Weil <sage@newdream.net>

.github/pull_request_template.md

@@ -40,9 +40,6 @@
   - [ ] Includes [integration test(s)](https://docs.ceph.com/en/latest/dev/developer_guide/testing_integration_tests/)
   - [ ] Includes bug reproducer
   - [ ] No tests
-- Teuthology
-  - [ ] Completed teuthology run
-  - [ ] No teuthology test necessary (e.g., documentation)
 
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