Remove obsolete Custom-patches job

As per conversation with Vasyl Saienko, this job is no longer in use
and may be removed.

Change-Id: Ia0c81f233db8eb2f1192c20268c4065fe7cb91dc
Related-Bug: PROD-22117
diff --git a/jenkins/client/job/custompatches.yml b/jenkins/client/job/custompatches.yml
deleted file mode 100644
index e7a7eed..0000000
--- a/jenkins/client/job/custompatches.yml
+++ /dev/null
@@ -1,43 +0,0 @@
-parameters:
-  jenkins:
-    client:
-      job:
-        custompatches:
-          concurrent: true
-          discard:
-            build:
-              keep_num: 20
-          display_name: Custom Patches - find and upload to review
-          name: custom-patches
-          param:
-            GERRIT_URI:
-              type: string
-              default: ''
-              description: "Gerrit URI to the projec"
-            GERRIT_CREDENTIALS:
-              default: mcp-ci-gerrit
-              type: string
-              description: "Name of creadentials to use when connecting to gerrit"
-            TARGET_GERRIT_URI:
-              default: ''
-              type: string
-              description: "Link to the target on gerrit, if not set GERRIT_URI is picked"
-            OLD_BRANCH:
-              default: ''
-              type: string
-              description: "Old branch on GERRIT_URI to take patches from, tupically previous release"
-            NEW_BRANCH:
-              default: ''
-              type: string
-              description: "New branch to compare with and push patches to, tupically current release"
-            DRY_RUN:
-              default: 'false'
-              type: boolean
-              description: "Do not upload custom patches on review, just log them"
-          scm:
-            script: custompatches.groovy
-            type: git
-            url: "${_param:jenkins_gerrit_url}/openstack-ci/openstack-pipelines"
-            credentials: "gerrit"
-          type: workflow-scm
-