IPA: Drop unused ifdef HAVE_SELINUX_LOGIN_DIR
Macros ALL_SERVICES and selogin_path were conditionally defined
in case of existing selinux login directory at configure time
(defined macro AVE_SELINUX_LOGIN_DIR)
However, these macros were unused for quite a long 2.5 year
and last usage was removed in commit 9c47c8c59b5c9078f342f82367cd0ad7857acef8
"IPA: Use set_seuser instead of writing selinux login file"
Reviewed-by: Pavel Březina <pbrezina@redhat.com>