Revert "Correct opacitiy for drag move indicator"

Revert submission 33611203

Reason for revert: The change is causing window flickering after drag for both same- and cross-display drags, we should land the change together with proper fix for the flickering. b/424595801

Bug: 424595801
Reverted changes: /q/submissionid:33611203

Change-Id: I70dd4aa170bf10109166cee34d704e49b1079373