[SurfaceFlinger] Remove saturation matrix of Adaptive mode.

Previously, we have to hack our code to make sure the input color is saturated
to the same output color regarding the color mode because we can't deliver the
saturation for Display P3 in the color profile. However, such capability should
really be device specific, and since we already have it, remove the usage of
this API.

BUG: 80490445
BUG: 118503801
Test: Build, flash and boot. Open Photos and Files to verify.
Change-Id: I09f4a157394056acb970751b820a87a387702e44