Remove cosign stuff. It's not working and I can figure this out later.

generic-pipelines/simple-ros-pipeline.yaml

@@ -9,7 +9,6 @@ spec:
   workspaces:
   - name: shared-data
   - name: git-credentials
-  - name: cosign-credentials
   params:
   - name: registry-login-secret-name
   tasks:
@@ -33,8 +32,6 @@ spec:
     workspaces:
     - name: source
       workspace: shared-data
-    - name: cosign-credentials
-      workspace: cosign-credentials
     params:
     - name: registry
       value: harbor.internal.jpace121.net