webhook tests: remove webhook-operator resource limits (#2131)

The memory limit was causing the pod to be OOMKilled in my local
execution of the experimental e2e tests. That limit is irrelevant to the
purpose of the test, so it can be safely removed.

Author: joelanford

testdata/images/bundles/webhook-operator/v0.0.1/manifests/webhook-operator.clusterserviceversion.yaml

@@ -107,9 +107,6 @@ spec:
                   name: webhook-server
                   protocol: TCP
                 resources:
-                  limits:
-                    cpu: 100m
-                    memory: 30Mi
                   requests:
                     cpu: 100m
                     memory: 20Mi