Disable client tests in CI because there aren't any now.

.taskcluster.yml

@@ -120,35 +120,6 @@ tasks:
       owner: "{{ event.head.user.email }}"
       source: "{{ event.head.repo.url }}"
 
-  - provisionerId: "{{ taskcluster.docker.provisionerId }}"
-    workerType: "{{ taskcluster.docker.workerType }}"
-    payload:
-      maxRunTime: 1200
-      image: "mozillareleases/python-test-runner"
-      env:
-        NO_VOLUME_MOUNT: 1
-      command:
-        - "/bin/bash"
-        - "-c"
-        - "git clone $GITHUB_HEAD_REPO_URL balrog && cd balrog && git checkout $GITHUB_HEAD_BRANCH && cd client && bash run-tests.sh"
-      features:
-        dind: true
-    extra:
-      github:
-        env: true
-        events:
-          - pull_request.opened
-          - pull_request.synchronize
-          - pull_request.reopened
-          - push
-        branches:
-          - master
-    metadata:
-      name: Balrog Python Client Tests
-      description: Balrog Python Client Tests
-      owner: "{{ event.head.user.email }}"
-      source: "{{ event.head.repo.url }}"
-
   - provisionerId: "{{ taskcluster.docker.provisionerId }}"
     workerType: "{{ taskcluster.docker.workerType }}"
     scopes: