remove memo test

packages/react-reconciler/src/__tests__/ReactMemo-test.js

@@ -497,21 +497,5 @@ describe('memo', () => {
         expect(root).toMatchRenderedOutput('1');
       });
     });
-
-    it('inner component of react memo should have _debugOwner set', async () => {
-      const InComponent = React.forwardRef((props, ref) => <div ref={ref} />);
-      const Outer = React.memo(InComponent);
-      const App = () => {
-        const ref = React.createRef();
-        return <Outer ref={ref}>Click me! </Outer>;
-      };
-      ReactNoop.render(<App />);
-      expect(Scheduler).toFlushWithoutYielding();
-      const innerFiber = ReactNoop.getRoot().current.child.child.child;
-      const innerFiberOwner = innerFiber._debugOwner;
-      expect(innerFiber.type.$$typeof).toBe(Symbol.for('react.forward_ref'));
-      expect(innerFiberOwner).not.toBeNull();
-      expect(innerFiberOwner.type.$$typeof).toBe(Symbol.for('react.memo'));
-    });
   }
 });