Revert "InCallUI: Add transparency to Glowpad background [1/3]"

This reverts commit c7b9e5a18e9eb87dc81a9f97e6970d4b93816f7f.
Revert "answer_fragment.xml: fix build"

This reverts commit f314ecfccbc8fbb829d7c4662756a38b11672793.
Revert "InCallUI: Add "Answer Via Speakerphone" Glowpad Target"

This reverts commit 423bd996f79a9a8ecdb5e65a5431fa4fa4d04ecc.