Reset default namespace deletion timeout to 5 minutes

Author: yutedz

test/e2e/framework/framework.go

@@ -59,9 +59,7 @@ import (
 const (
 	maxKubectlExecRetries = 5
 	// DefaultNamespaceDeletionTimeout is timeout duration for waiting for a namespace deletion.
-	// TODO(mikedanese): reset this to 5 minutes once #47135 is resolved.
-	// ref https://github.com/kubernetes/kubernetes/issues/47135
-	DefaultNamespaceDeletionTimeout = 10 * time.Minute
+	DefaultNamespaceDeletionTimeout = 5 * time.Minute
 )
 
 // Framework supports common operations used by e2e tests; it will keep a client & a namespace for you.