tzdatacheck: don't hard code SELinux domain name

An automatic domain transition is already defined by SELinux
policy. Avoid having redundant information on the exec line.

This commit depends on commit 17fff893c04971b519d25d52b07f51111353cba5
which made the SELinux process label optional.

Change-Id: I89464f2bd218c7d6e8db08aa6bed2b62ec6dad2a
1 file changed