Delete unused imports.

app/src/main/java/chat/rocket/android/fragment/sidebar/SidebarMainContract.java

@@ -6,7 +6,6 @@ import chat.rocket.core.models.RoomSidebar;
 import io.reactivex.Flowable;
 import java.util.List;
 import chat.rocket.android.shared.BaseContract;
-import chat.rocket.core.models.Room;
 import chat.rocket.core.models.Spotlight;
 import chat.rocket.core.models.User;
 

app/src/main/java/chat/rocket/android/layouthelper/chatroom/roomlist/RoomListHeader.java

@@ -4,7 +4,6 @@ import android.support.annotation.NonNull;
 
 import chat.rocket.core.models.RoomSidebar;
 import java.util.List;
-import chat.rocket.core.models.Room;
 
 public interface RoomListHeader {
 

persistence-realm/src/main/java/chat/rocket/persistence/realm/repositories/RealmUserRepository.java

@@ -5,8 +5,6 @@ import android.support.v4.util.Pair;
 
 import com.hadisatrio.optional.Optional;
 
-import org.jetbrains.annotations.NotNull;
-
 import java.util.ArrayList;
 import java.util.List;
 

rocket-chat-android-widgets/src/main/java/chat/rocket/android/widget/RoomToolbar.java

@@ -7,7 +7,6 @@ import android.support.annotation.Nullable;
 import android.support.annotation.StringRes;
 import android.support.graphics.drawable.VectorDrawableCompat;
 import android.support.v4.content.ContextCompat;
-import android.support.v4.graphics.drawable.DrawableCompat;
 import android.support.v7.graphics.drawable.DrawerArrowDrawable;
 import android.support.v7.widget.AppCompatImageView;
 import android.support.v7.widget.Toolbar;