Update src/main/java/org/openrewrite/java/testing/junit5/UpdateMockWebServerMockResponse.java

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: dsgrieve

src/main/java/org/openrewrite/java/testing/junit5/UpdateMockWebServerMockResponse.java

@@ -214,10 +214,7 @@ public J.MethodInvocation visitMethodInvocation(J.MethodInvocation method, Execu
                                     transformed = transformed.withPrefix(arg.getPrefix());
                                 }
                                 return transformed;
-                            }
-                            return arg;
                         }));
-                    }
                 }.visit(j, ctx);
             }
         });