Remove testSdcarddDomain

This implementation detail has changed, making this test no
longer accurate. When running with sdcardfs, sdcardd mounts
sdcardfs and then terminates, with all future interaction
handled by sdcardfs.

Bug: 35919392
Change-Id: Ibbb7185148d9a8d0803fd6d63afd5013619e5135
Test: Test is no longer present
1 file changed