CTS appop atoms: don't use shell

noteOp has changed to now blame the shell instead of
the cts test app when adopting shell permissions, causing
the test to fail.
Since using shell permissions is currently unnecessary, we can
just call the noteOp directly.

Fixes: 158101201
Test: atest UidAtomTests#testForegroundServiceAccessAppOp UidAtomTests#testAppOps
Change-Id: I9d29c47d2348bf537cd904d1de5653426a5d3c01