[Core,iOS,Android] Remove experimental flags Carousel, Swipe, Shapes, Brush

[rmarinho]

Description of Change

Remove other Experimental flags Brushes, Shapes, SwipeView, CarouselView, DragAndDrop for 5.0

Issues Resolved

• none

API Changes

Removed:
ExperimentalFlags.cs

	internal const string CarouselViewExperimental = "CarouselView_Experimental";
	internal const string SwipeViewExperimental = "SwipeView_Experimental";
	internal const string ShapesExperimental = "Shapes_Experimental";
	internal const string BrushExperimental = "Brush_Experimental";
	internal const string DragAndDropExperimental = "DragAndDrop_Experimental";

Platforms Affected

• Core/XAML (all platforms)
• iOS
• Android
• UWP

Behavioral/Visual Changes

None

Before/After Screenshots

Not applicable

Testing Procedure

Tests should still pass

PR Checklist

• Targets the correct branch
• Tests are passing (or failures are unrelated)

[jsuarezruiz]

The changes look nice, I have searched to see if there was something pending and everything seems correct, just fix the conflicts.