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>