Don't use address sanitizer for selinux tools.

Address sanitizer requires using libc++ (apparently). We removed
libc++ from these projects since they were C and the SDK/CTS was not
able to find libc++.

If we're interested in continuing to use ASAN on these tools
(probably), we should turn libc++ back on once we're sure CTS won't
die.

Bug: 19778891
Change-Id: I3c1913171a15396ead73277ec1186fead730f66d