Revert "Quick fix for onAppCreate()"

Author: Andrii-Horishnii-Glia

app/src/main/java/com/glia/exampleapp/Application.java

@@ -3,7 +3,6 @@
 import android.text.TextUtils;
 import android.util.Log;
 
-import com.glia.androidsdk.Glia;
 import com.glia.widgets.GliaWidgets;
 import com.google.firebase.FirebaseApp;
 import com.google.firebase.FirebaseOptions;
@@ -15,8 +14,6 @@ public void onCreate() {
         super.onCreate();
         initFirebase();
 
-        Glia.onAppCreate(this); // TODO: remove this line when Core SDK is updated
-
         GliaWidgets.setCustomCardAdapter(new ExampleCustomCardAdapter());
     }