Consolidate 'delete a read-only file on windows' test cases
These two tests can't be disambiguated at comptime, since the filesystem that the test is running on also matters for whether or not POSIX_SEMANTICS / IGNORE_READONLY_ATTRIBUTE can actually be used (since they are only supported on NTFS).
21ecb1ba0fRyan Liptak committed on 7/23/2023, 8:26:26 AMparent1ae378e