Remove loops found in redirects data

This problem was found when checking bad links using the tool proposed
in #22541. It might have confused many browsers so far.

Author: tengqm

static/_redirects

@@ -128,7 +128,7 @@
 /docs/concepts/workloads/controllers/cron-jobs/deployment/     /docs/concepts/workloads/controllers/cron-jobs/ 301
 /docs/concepts/workloads/controllers/daemonset/docs/concepts/workloads/pods/pod/     /docs/concepts/workloads/pods/pod/ 301
 /docs/concepts/workloads/controllers/deployment/docs/concepts/workloads/pods/pod/     /docs/concepts/workloads/pods/pod/ 301
-/docs/concepts/workloads/controllers/job/     /docs/concepts/workloads/controllers/job/ 301
+
 /docs/concepts/workloads/controllers/jobs-run-to-completion/ /docs/concepts/workloads/controllers/job/ 301
 /docs/concepts/workloads/controllers/statefulsets/     /docs/concepts/workloads/controllers/statefulset/ 301
 /docs/concepts/workloads/controllers/statefulset.md     /docs/concepts/workloads/controllers/statefulset/ 301!
@@ -493,4 +493,4 @@
 /docs/setup/multiple-zones/     /docs/setup/best-practices/multiple-zones/   301
 /docs/setup/cluster-large/     /docs/setup/best-practices/cluster-large/   301
 /docs/setup/node-conformance/     /docs/setup/best-practices/node-conformance/   301
-/docs/setup/certificates/     /docs/setup/best-practices/certificates/   301
+/docs/setup/certificates/     /docs/setup/best-practices/certificates/   301