Remove unused imports

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

@@ -60,7 +60,6 @@ public class SidebarMainFragment extends AbstractFragment implements SidebarMain
   private TextView loadMoreResultsText;
   private List<RoomSidebar> roomSidebarList;
   private Disposable spotlightDisposable;
-  private RocketChatCache rocketChatCache;
   private String hostname;
   private static final String HOSTNAME = "hostname";
 
@@ -93,7 +92,7 @@ public class SidebarMainFragment extends AbstractFragment implements SidebarMain
         new SessionInteractor(new RealmSessionRepository(hostname))
     );
 
-    rocketChatCache = new RocketChatCache(getContext().getApplicationContext());
+    RocketChatCache rocketChatCache = new RocketChatCache(getContext().getApplicationContext());
 
     presenter = new SidebarMainPresenter(
         hostname,

app/src/main/java/chat/rocket/android/service/RealmBasedConnectivityManager.java

@@ -7,11 +7,11 @@ import android.os.IBinder;
 import android.support.annotation.Nullable;
 
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.TimeUnit;
+
 import chat.rocket.android.helper.RxHelper;
 import chat.rocket.android.log.RCLog;
 import chat.rocket.core.models.ServerInfo;