Optimize imports

Signed-off-by: Mario Danic <mario@lovelyhq.com>

app/src/main/java/com/nextcloud/talk/controllers/ContactsController.java

@@ -22,7 +22,6 @@ package com.nextcloud.talk.controllers;
 
 import android.app.SearchManager;
 import android.content.Context;
-import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
 import android.os.Handler;
@@ -52,7 +51,6 @@ import com.nextcloud.talk.adapters.items.UserItem;
 import com.nextcloud.talk.api.NcApi;
 import com.nextcloud.talk.application.NextcloudTalkApplication;
 import com.nextcloud.talk.controllers.base.BaseController;
-import com.nextcloud.talk.controllers.bottomsheet.CallMenuController;
 import com.nextcloud.talk.controllers.bottomsheet.EntryMenuController;
 import com.nextcloud.talk.controllers.bottomsheet.OperationsMenuController;
 import com.nextcloud.talk.events.BottomSheetLockEvent;
@@ -66,7 +64,6 @@ import com.nextcloud.talk.models.json.rooms.RoomOverall;
 import com.nextcloud.talk.models.json.sharees.Sharee;
 import com.nextcloud.talk.models.json.sharees.ShareesOverall;
 import com.nextcloud.talk.utils.ApiUtils;
-import com.nextcloud.talk.utils.KeyboardUtils;
 import com.nextcloud.talk.utils.bundle.BundleKeys;
 import com.nextcloud.talk.utils.database.user.UserUtils;
 

app/src/main/java/com/nextcloud/talk/controllers/bottomsheet/CallMenuController.java

@@ -30,13 +30,11 @@ import android.view.ViewGroup;
 
 import com.bluelinelabs.conductor.RouterTransaction;
 import com.bluelinelabs.conductor.changehandler.HorizontalChangeHandler;
-import com.bluelinelabs.conductor.changehandler.VerticalChangeHandler;
 import com.kennyc.bottomsheet.adapters.AppAdapter;
 import com.nextcloud.talk.R;
 import com.nextcloud.talk.adapters.items.AppItem;
 import com.nextcloud.talk.adapters.items.MenuItem;
 import com.nextcloud.talk.application.NextcloudTalkApplication;
-import com.nextcloud.talk.controllers.ContactsController;
 import com.nextcloud.talk.controllers.base.BaseController;
 import com.nextcloud.talk.events.BottomSheetLockEvent;
 import com.nextcloud.talk.models.database.UserEntity;