Removed ui-framework and ui-platform from README.md
Removed ui-framework and ui-platform from README.md

Relnote: "ui-framework and ui-platform projects have been merged into
ui-core, so all dependencies on those modules only need to depend
on ui-core."

Test: only visual inspection

Change-Id: Ica7ab68b033c5e8952d8083eace1f70488a3e862

AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx