Remove iOS platform check for running devtools

Summary:
Currently, DevTools only work under ios (although this is undocumented!), because the JavaScriptEngine initialization process skips setupDevTools() on android.

DevTools work fine with Android, as tested on 0.26, 0.27, and 0.28 using Nuclide's inspector.

For reference, [the relevant issue on react-devtools](https://github.com/facebook/react-devtools/issues/229).
Closes https://github.com/facebook/react-native/pull/8095

Reviewed By: javache

Differential Revision: D3443980

Pulled By: andreicoman11

fbshipit-source-id: 3d7b2e83cf4158a1228d2e21510509ab63411a5d

ReactAndroid/src/androidTest/java/com/facebook/react/tests/JSLocaleTest.java

@@ -11,6 +11,7 @@ package com.facebook.react.tests;
 import java.util.Arrays;
 import java.util.List;
 
+import com.facebook.react.testing.FakeWebSocketModule;
 import com.facebook.react.testing.ReactIntegrationTestCase;
 import com.facebook.react.testing.ReactTestHelper;
 import com.facebook.react.testing.StringRecordingModule;
@@ -59,9 +60,9 @@ public class JSLocaleTest extends ReactIntegrationTestCase {
     mInstance = ReactTestHelper.catalystInstanceBuilder(this)
         .addNativeModule(mStringRecordingModule)
         .addNativeModule(mUIManager)
+        .addNativeModule(new FakeWebSocketModule())
         .addJSModule(TestJSLocaleModule.class)
         .build();
-
   }
 
   public void testToUpper() {
@@ -100,6 +101,4 @@ public class JSLocaleTest extends ReactIntegrationTestCase {
     assertEquals("γαζίες καὶ μυρτιὲς δὲν θὰ βρῶ πιὰ στὸ χρυσαφὶ ξέφωτο", answers[3]);
     assertEquals("chinese: 幓 厏吪吙 鈊釿閍 碞碠粻 曮禷", answers[4]);
   }
-
-
 }