Remove broken WindowUntrustedTouchTest tests

These tests are verifying what happens if someone manually changes the max obscuring opacity through settings, but this is not supported and is causing issues in b/238983569 due to ag/17182670 I believe. Removing those.

Bug: 274213741
Merged-In: I72438f5c262b4a94ff0c1a85272aec66624e6436
Change-Id: I72438f5c262b4a94ff0c1a85272aec66624e6436
Test: TH passes
(cherry picked from commit c5cac28dca2d4db99725cde5ea141ff5a63848aa)
1 file changed