Remove the stable rocky from supported branch in Tempest master

Rocky is in Extended Maintainance state now so we can
remove this from supported branch and also remove its
jobs to run on master gate.

-https://releases.openstack.org/

Depends-On: https://review.opendev.org/#/c/722186/

Change-Id: I46f4abf07839fb5e8767635e2502e97e8409b8b8
diff --git a/.zuul.yaml b/.zuul.yaml
index 80d49d8..5f4145b 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -457,12 +457,6 @@
     override-checkout: stable/stein
 
 - job:
-    name: tempest-full-rocky-py3
-    parent: tempest-full-py3
-    nodeset: openstack-single-node-xenial
-    override-checkout: stable/rocky
-
-- job:
     name: tempest-tox-plugin-sanity-check
     parent: tox
     description: |
@@ -648,8 +642,6 @@
             irrelevant-files: *tempest-irrelevant-files
         - tempest-full-stein-py3:
             irrelevant-files: *tempest-irrelevant-files
-        - tempest-full-rocky-py3:
-            irrelevant-files: *tempest-irrelevant-files
         - tempest-multinode-full-py3:
             irrelevant-files: *tempest-irrelevant-files
         - tempest-tox-plugin-sanity-check:
@@ -738,7 +730,6 @@
       jobs:
         - tempest-full-train-py3
         - tempest-full-stein-py3
-        - tempest-full-rocky-py3
     periodic:
       jobs:
         - tempest-all
diff --git a/doc/source/supported_version.rst b/doc/source/supported_version.rst
index 4f65fd4..62faa1f 100644
--- a/doc/source/supported_version.rst
+++ b/doc/source/supported_version.rst
@@ -11,7 +11,6 @@
 
 * Train
 * Stein
-* Rocky
 
 For older OpenStack Release: