ci(cleanup): remove individual cpu extension code coverage

There are few cpu extension tests in code coverage, considering we have
a run config which includes all the cpu extension in one.

Change-Id: I6d20eac6d20ee082d80e6d2bfe90f53b22eca016
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
2 files changed