Remove built-in shadows from the @config annotation (flutter#26823)

Author: hoisie

shell/platform/android/test/io/flutter/plugin/editing/InputConnectionAdaptorTest.java

@@ -55,12 +55,11 @@
 import org.robolectric.annotation.Implementation;
 import org.robolectric.annotation.Implements;
 import org.robolectric.shadow.api.Shadow;
-import org.robolectric.shadows.ShadowClipboardManager;
 import org.robolectric.shadows.ShadowInputMethodManager;
 
 @Config(
     manifest = Config.NONE,
-    shadows = {ShadowClipboardManager.class, InputConnectionAdaptorTest.TestImm.class})
+    shadows = {InputConnectionAdaptorTest.TestImm.class})
 @RunWith(RobolectricTestRunner.class)
 public class InputConnectionAdaptorTest {
   @Mock KeyboardManager mockKeyboardManager;

shell/platform/android/test/io/flutter/plugin/platform/SingleViewPresentationTest.java

@@ -15,13 +15,8 @@
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
 import org.robolectric.annotation.Config;
-import org.robolectric.shadows.ShadowDisplay;
-import org.robolectric.shadows.ShadowDisplayManager;
-import org.robolectric.shadows.ShadowInputMethodManager;
 
-@Config(
-    manifest = Config.NONE,
-    shadows = {ShadowInputMethodManager.class, ShadowDisplayManager.class, ShadowDisplay.class})
+@Config(manifest = Config.NONE)
 @RunWith(RobolectricTestRunner.class)
 @TargetApi(28)
 public class SingleViewPresentationTest {