Revert "AudioManager: make swap volume buttons RTL aware"

This reverts commit c915cf91efb05861c02e8e8a57b6a0374d0177f6.
Revert "Swap volume buttons when the screen is rotated by 90 or 180 degrees"

This reverts commit 834d8059d02aead6d5e882f96dee2a1fb969c1af.