(5/n) Remove One-handed mode overlay mechanism from quickstep

We were already splitted One-handed mode larger gesture region from
original before, so remove unnecessary overlay listener.

Bug: 201743873
Bug: 202132480

Test: manually test One-handed mode gesture
Test: build ROM and doing adb test (adb shell dumpsys activity
services com.google.android.apps.nexuslauncher/
com.android.quickstep.TouchInteractionService)

Change-Id: I7e0a750fe1850f39586a21718c2e2e5466ad8e28