Revert "experimental_use(context) for server components and ssr (facebook#25226)"

This reverts commit 3613284.

implements the experimental use(context) API for the server components (Flight) and SSR (Fizz) runtimes

Author: acdlite

packages/react-dom/src/__tests__/ReactDOMFizzServer-test.js

@@ -5215,54 +5215,6 @@ describe('ReactDOMFizzServer', () => {
       expect(getVisibleChildren(container)).toEqual('ABC');
     });
 
-    // @gate enableUseHook
-    it('basic use(context)', async () => {
-      const ContextA = React.createContext('default');
-      const ContextB = React.createContext('B');
-      const ServerContext = React.createServerContext(
-        'ServerContext',
-        'default',
-      );
-      function Client() {
-        return use(ContextA) + use(ContextB);
-      }
-      function ServerComponent() {
-        return use(ServerContext);
-      }
-      function Server() {
-        return (
-          <ServerContext.Provider value="C">
-            <ServerComponent />
-          </ServerContext.Provider>
-        );
-      }
-      function App() {
-        return (
-          <>
-            <ContextA.Provider value="A">
-              <Client />
-            </ContextA.Provider>
-            <Server />
-          </>
-        );
-      }
-
-      await act(async () => {
-        const {pipe} = renderToPipeableStream(<App />);
-        pipe(writable);
-      });
-      expect(getVisibleChildren(container)).toEqual(['AB', 'C']);
-
-      // Hydration uses a different renderer runtime (Fiber instead of Fizz).
-      // We reset _currentRenderer here to not trigger a warning about multiple
-      // renderers concurrently using these contexts
-      ContextA._currentRenderer = null;
-      ServerContext._currentRenderer = null;
-      ReactDOMClient.hydrateRoot(container, <App />);
-      expect(Scheduler).toFlushAndYield([]);
-      expect(getVisibleChildren(container)).toEqual(['AB', 'C']);
-    });
-
     // @gate enableUseHook
     it('use(promise) in multiple components', async () => {
       const promiseA = Promise.resolve('A');

packages/react-server/src/ReactFizzHooks.js

@@ -40,11 +40,7 @@ import {
   enableUseMemoCacheHook,
 } from 'shared/ReactFeatureFlags';
 import is from 'shared/objectIs';
-import {
-  REACT_SERVER_CONTEXT_TYPE,
-  REACT_CONTEXT_TYPE,
-  REACT_MEMO_CACHE_SENTINEL,
-} from 'shared/ReactSymbols';
+import {REACT_MEMO_CACHE_SENTINEL} from 'shared/ReactSymbols';
 
 type BasicStateAction<S> = (S => S) | S;
 type Dispatch<A> = A => void;
@@ -648,12 +644,8 @@ function use<T>(usable: Usable<T>): T {
           }
         }
       }
-    } else if (
-      usable.$$typeof === REACT_CONTEXT_TYPE ||
-      usable.$$typeof === REACT_SERVER_CONTEXT_TYPE
-    ) {
-      const context: ReactContext<T> = (usable: any);
-      return readContext(context);
+    } else {
+      // TODO: Add support for Context
     }
   }