Remove invalid comments in unit tests

pkg/kubectl/cmd/exec_test.go

@@ -206,7 +206,6 @@ func TestExec(t *testing.T) {
 						body := objBody(codec, test.pod)
 						return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: body}, nil
 					default:
-						// Ensures no GET is performed when deleting by name
 						t.Errorf("%s: unexpected request: %s %#v\n%#v", test.name, req.Method, req.URL, req)
 						return nil, fmt.Errorf("unexpected request")
 					}