[stable-only][CI] remove tempest-centos8-stream-fips periodic

CentOS Stream 8 became End of Life and centos-8-stream nodeset was
removed from Zuul configuration. All jobs that uses this nodeset should
be deleted.

Change-Id: I6b625e57a45906b57c0a339fa5f632c7a34abcf7

Author: Elod Illes

.zuul.yaml

@@ -761,7 +761,3 @@
         - nova-emulation
         - tempest-integrated-compute-centos-9-stream:
             irrelevant-files: *nova-base-irrelevant-files
-    periodic:
-      jobs:
-        - tempest-centos8-stream-fips:
-            branches: master