Revert "Merge pull request #725 from jichenjc/add_metrics_service"

This reverts commit 8f51aa2, reversing
changes made to 0163b5e.

Author: hidekazuna

config/manager/manager.yaml

@@ -19,7 +19,6 @@ spec:
       containers:
       - args:
         - --leader-elect
-        - --metrics-bind-addr=127.0.0.1:8080
         image: controller:latest
         imagePullPolicy: IfNotPresent
         name: manager