Remove the Queens stable branch jobs from master gate

Tempest 23.0.0 is released now, which marks the end of support
for Queens release - https://review.opendev.org/#/c/703521/

We do not need to run the Queens stable jobs on master gate now.

Depends-On: https://review.opendev.org/#/c/703521/
Change-Id: I2ae25eb7aa88258580a4163f617548df35e74bdb
1 file changed