Revert "Enable dithering on RippleDrawable"

This reverts commit 1cbfc3b00bd058e8bddd93cd5fc9b4e0b985420e.

Reason for revert: CL was no-op
Bug: 189281134
Change-Id: I2c70b51dd1d2f679a8310b1847675360ce415d35
1 file changed