Remove redundant import statement

same modules were imported twice

Author: vaibhavhrt

android/src/main/java/com/dieam/reactnativepushnotification/modules/RNPushNotificationHelper.java

@@ -28,9 +28,6 @@
 import androidx.annotation.RequiresApi;
 import androidx.core.app.NotificationCompat;
 
-import androidx.annotation.RequiresApi;
-import androidx.core.app.NotificationCompat;
-
 import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.ReadableMap;