Drop bionic arm64 testing

This test was primarily there to ensure we could continue to do
openafs things on arm64 on this platform. We're dropping wheel
building on this platform which was the primary openafs use case. Just
clean the job up as followup.

Change-Id: Ie5f4516e33de0f910b9f456426b77769736638c2

zuul.d/system-config-roles.yaml

@@ -39,18 +39,6 @@
           nodes:
             - base
 
-- job:
-    name: system-config-zuul-role-integration-bionic-arm64
-    parent: system-config-zuul-role-integration
-    nodeset:
-      nodes:
-        - name: base
-          label: ubuntu-bionic-arm64
-      groups:
-        - name: openafs
-          nodes:
-            - base
-
 - job:
     name: system-config-zuul-role-integration-focal
     parent: system-config-zuul-role-integration
@@ -63,6 +51,18 @@
           nodes:
             - base
 
+- job:
+    name: system-config-zuul-role-integration-focal-arm64
+    parent: system-config-zuul-role-integration
+    nodeset:
+      nodes:
+        - name: base
+          label: ubuntu-focal-arm64
+      groups:
+        - name: openafs
+          nodes:
+            - base
+
 - job:
     name: system-config-zuul-role-integration-jammy
     parent: system-config-zuul-role-integration
@@ -87,18 +87,6 @@
           nodes:
             - base
 
-- job:
-    name: system-config-zuul-role-integration-focal-arm64
-    parent: system-config-zuul-role-integration
-    nodeset:
-      nodes:
-        - name: base
-          label: ubuntu-focal-arm64
-      groups:
-        - name: openafs
-          nodes:
-            - base
-
 - job:
     name: system-config-zuul-role-integration-jammy-arm64
     parent: system-config-zuul-role-integration
@@ -201,7 +189,6 @@
     check:
       jobs:
         - system-config-zuul-role-integration-bionic
-        - system-config-zuul-role-integration-bionic-arm64
         - system-config-zuul-role-integration-focal
         - system-config-zuul-role-integration-focal-arm64
         - system-config-zuul-role-integration-jammy
@@ -217,7 +204,6 @@
     gate:
       jobs:
         - system-config-zuul-role-integration-bionic
-        - system-config-zuul-role-integration-bionic-arm64
         - system-config-zuul-role-integration-focal
         - system-config-zuul-role-integration-focal-arm64
         - system-config-zuul-role-integration-jammy