SystemUI: Fix too long SK bluetooth string

Change-Id: Ib5202b27621e1668e1d4ab4ab09700d4698fcb05
Revert "[3/3] AudioEffect: Add a stereo widener effect"

This reverts commit f014e79e74811fb3697eb150fb44ca321b326d1c.
Revert "[3/3] AudioFX: Add center frequency param to bassboost"

This reverts commit 7a3301bde914c233733dae4de2fd5857577304b0.