Revert "i9500: Increase all mic volumes"

This reverts commit 14c16c84f64385206d59d4943a4f5842b8f5cb9a.


Change-Id: Ic920c6b70b57cc98f6b571fb454abe29ab6abc01
Signed-off-by: Xphoid <korhan.gogus@gmail.com>