chore(colorarea,colorhandle,colorloupe,colorslider,colorwheel): remove mdx files #9893

Job	Run time
Capture changed-files	2s
Testing	0s
Compare / Fetch & validate build artifacts (marissahuysentruyt/css-1049-refactor-color-components-mdx)	3m 36s
Publish / Publish	1m 40s
Compare / Fetch & validate build artifacts (main)	3m 37s
Verify (ubuntu-latest, 20) / Build (ubuntu-latest, 20, false)	3m 38s
Verify (macos-latest, 20) / Build (macos-latest, 20, false)	3m 15s
Plugin tests	0s
Lint / Lint	45s
Compare / Compare compiled assets	1m 16s
	17m 49s

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