Revert "Add setting for touch gesture and long-press home assist..."

Revert "Hide long-press home animation when disabled by setting"

Revert submission 13958909-mrcasey-lph

Reason for revert: Possible test breakage b/183684181
Reverted Changes:
Iaaf39e76a:Hide long-press home animation when disabled by se...
I24ee67cf1:Add setting for touch gesture and long-press home ...

Change-Id: Ieb43607a8010b843fc643979953a266cbb84788f