Messaging: Remove VisibleForTesting

Since we removed all tests, no need to keep those flags around either

Change-Id: Icaf71832c459cecbcbddc75f552c60e48ae95189

src/com/android/messaging/ui/conversation/ConversationActivityUiState.java

@@ -23,7 +23,6 @@ import androidx.annotation.NonNull;
 
 import com.android.messaging.ui.contact.ContactPickerFragment;
 import com.android.messaging.util.Assert;
-import com.google.common.annotations.VisibleForTesting;
 
 /**
  * Keeps track of the different UI states that the ConversationActivity may be in. This acts as
@@ -299,12 +298,4 @@ public class ConversationActivityUiState implements Parcelable, Cloneable {
         }
         return null;
     }
-
-    /**
-     * allows for overridding the internal UI state. Should never be called except by test code.
-     */
-    @VisibleForTesting
-    void testSetUiState(final int uiState) {
-        mConversationContactUiState = uiState;
-    }
 }

src/com/android/messaging/ui/conversation/ConversationFragment.java

@@ -110,7 +110,6 @@ import com.android.messaging.util.SafeAsyncTask;
 import com.android.messaging.util.TextUtil;
 import com.android.messaging.util.UiUtils;
 import com.android.messaging.util.UriUtil;
-import com.google.common.annotations.VisibleForTesting;
 
 import java.io.File;
 import java.util.ArrayList;
@@ -160,7 +159,6 @@ public class ConversationFragment extends Fragment implements ConversationDataLi
     // This binding keeps track of our associated ConversationData instance
     // A binding should have the lifetime of the owning component,
     //  don't recreate, unbind and bind if you need new data
-    @VisibleForTesting
     final Binding<ConversationData> mBinding = BindingBase.createBinding(this);
 
     // Saved Instance State Data - only for temporal data which is nice to maintain but not