Remove code that check for dashboard feature.

- remove DashboardFeatureProvider.isEnabled() and all relating code
and tests.

Bug: 35764802
Test: make RunSettingsRoboTests
Change-Id: If7796677abc8904b7436525836d50cdef38e37a4

tests/robotests/src/com/android/settings/gestures/AssistGestureSettingsTest.java

@@ -23,12 +23,10 @@ import com.android.settings.R;
 import com.android.settings.SettingsRobolectricTestRunner;
 import com.android.settings.TestConfig;
 import com.android.settings.core.PreferenceController;
-import com.android.settings.testutils.FakeFeatureFactory;
 
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
-import org.mockito.Answers;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 import org.robolectric.annotation.Config;
@@ -42,17 +40,13 @@ import static org.mockito.Mockito.when;
 @RunWith(SettingsRobolectricTestRunner.class)
 @Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
 public class AssistGestureSettingsTest {
-    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    @Mock
     private Context mContext;
     private AssistGestureSettings mSettings;
 
     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
-        FakeFeatureFactory.setupForTest(mContext);
-        final FakeFeatureFactory factory =
-                (FakeFeatureFactory) FakeFeatureFactory.getFactory(mContext);
-        when(factory.dashboardFeatureProvider.isEnabled()).thenReturn(true);
         mSettings = new AssistGestureSettings();
     }