Remove splash screen

[rolandgeider]

Seems we forgot some steps

W/FlutterActivityAndFragmentDelegate(23535): A splash screen was provided to Flutter, but this is deprecated. See flutter.dev/go/android-splash-migration for migration steps.

[Tolu007]

Hello, I would love to fix this, can you assign it to me? Thank you

[rolandgeider]

Hi! It's yours

[rolandgeider]

Closed by #199