diff --git a/packages/react-native-renderer/src/ReactFabric.js b/packages/react-native-renderer/src/ReactFabric.js
index 9e2c82548d..130b199580 100644
--- a/packages/react-native-renderer/src/ReactFabric.js
+++ b/packages/react-native-renderer/src/ReactFabric.js
@@ -118,28 +118,6 @@ const ReactFabric: ReactFabricType = {
   },
 };
 
-if (__DEV__) {
-  // $FlowFixMe
-  Object.assign(
-    ReactFabric.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED,
-    {
-      // TODO: none of these work since Fiber. Remove these dependencies.
-      // Used by RCTRenderingPerf, Systrace:
-      ReactDebugTool: {
-        addHook() {},
-        removeHook() {},
-      },
-      // Used by ReactPerfStallHandler, RCTRenderingPerf:
-      ReactPerf: {
-        start() {},
-        stop() {},
-        printInclusive() {},
-        printWasted() {},
-      },
-    },
-  );
-}
-
 ReactFabricRenderer.injectIntoDevTools({
   findFiberByHostInstance: ReactNativeComponentTree.getClosestInstanceFromNode,
   getInspectorDataForViewTag: getInspectorDataForViewTag,
diff --git a/packages/react-native-renderer/src/ReactNativeRenderer.js b/packages/react-native-renderer/src/ReactNativeRenderer.js
index ce55def9e6..7b5f3c7805 100644
--- a/packages/react-native-renderer/src/ReactNativeRenderer.js
+++ b/packages/react-native-renderer/src/ReactNativeRenderer.js
@@ -147,28 +147,6 @@ const ReactNativeRenderer: ReactNativeType = {
   },
 };
 
-if (__DEV__) {
-  // $FlowFixMe
-  Object.assign(
-    ReactNativeRenderer.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED,
-    {
-      // TODO: none of these work since Fiber. Remove these dependencies.
-      // Used by RCTRenderingPerf, Systrace:
-      ReactDebugTool: {
-        addHook() {},
-        removeHook() {},
-      },
-      // Used by ReactPerfStallHandler, RCTRenderingPerf:
-      ReactPerf: {
-        start() {},
-        stop() {},
-        printInclusive() {},
-        printWasted() {},
-      },
-    },
-  );
-}
-
 ReactNativeFiberRenderer.injectIntoDevTools({
   findFiberByHostInstance: ReactNativeComponentTree.getClosestInstanceFromNode,
   getInspectorDataForViewTag: getInspectorDataForViewTag,
diff --git a/packages/react-native-renderer/src/ReactNativeTypes.js b/packages/react-native-renderer/src/ReactNativeTypes.js
index 70a3203658..c38b0b44eb 100644
--- a/packages/react-native-renderer/src/ReactNativeTypes.js
+++ b/packages/react-native-renderer/src/ReactNativeTypes.js
@@ -89,9 +89,7 @@ export type NativeMethodsMixinType = {
 
 type SecretInternalsType = {
   NativeMethodsMixin: NativeMethodsMixinType,
-  ReactDebugTool?: any,
   ReactNativeComponentTree: any,
-  ReactPerf?: any,
   computeComponentStackForErrorReporting(tag: number): string,
   // TODO (bvaughn) Decide which additional types to expose here?
   // And how much information to fill in for the above types.
diff --git a/scripts/rollup/shims/react-native/ReactDebugTool.js b/scripts/rollup/shims/react-native/ReactDebugTool.js
deleted file mode 100644
index edde3b629e..0000000000
--- a/scripts/rollup/shims/react-native/ReactDebugTool.js
+++ /dev/null
@@ -1,18 +0,0 @@
-/**
- * Copyright (c) 2013-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- * @flow
- */
-
-'use strict';
-
-const {
-  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED,
-} = require('ReactNative');
-
-module.exports =
-  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.ReactDebugTool;
diff --git a/scripts/rollup/shims/react-native/ReactPerf.js b/scripts/rollup/shims/react-native/ReactPerf.js
deleted file mode 100644
index 637036afaf..0000000000
--- a/scripts/rollup/shims/react-native/ReactPerf.js
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) 2013-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @format
- * @flow
- */
-
-'use strict';
-
-const {
-  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED,
-} = require('ReactNative');
-
-module.exports = __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.ReactPerf;