Delete containerd/containerd presubmit jobs

These jobs do not run by default and are marked optional. The containerd
repo has moved to Github Actions to run node e2e tests, and so these
tests are no longer needed.

Signed-off-by: Chris Henzie <[email protected]>

Author: chrishenzie

config/jobs/containerd/containerd/containerd-presubmit-jobs.yaml

@@ -1,11 +1,9 @@
 dashboard_groups:
 - name: containerd
   dashboard_names:
-  - containerd-presubmits
   - containerd-periodic
   - containerd-postsubmits
 
 dashboards:
   - name: containerd-periodic
-  - name: containerd-presubmits
   - name: containerd-postsubmits