MainActivity: Code clean

app/src/main/java/org/anitab/mentorship/view/activities/MainActivity.kt

@@ -5,9 +5,9 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import android.widget.Toast
-import androidx.paging.ExperimentalPagingApi
 import com.google.android.material.bottomnavigation.BottomNavigationView
-import kotlinx.android.synthetic.main.activity_main.*
+import kotlinx.android.synthetic.main.activity_main.bottomNavigation
+import kotlinx.android.synthetic.main.activity_main.toolbar
 import org.anitab.mentorship.R
 import org.anitab.mentorship.utils.PreferenceManager
 import org.anitab.mentorship.view.fragments.HomeFragment
@@ -29,7 +29,6 @@ class MainActivity : BaseActivity() {
 
     private val preferenceManager: PreferenceManager = PreferenceManager()
 
-    @ExperimentalPagingApi
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
@@ -44,7 +43,6 @@ class MainActivity : BaseActivity() {
         }
     }
 
-    @ExperimentalPagingApi
     private val mOnNavigationItemSelectedListener =
             BottomNavigationView.OnNavigationItemSelectedListener { item ->
                 when (item.itemId) {