fix include/not_embedded.inc to be independent from the environment

in particular, not fail with --vertical_results

mysql-test/include/not_embedded.inc

@@ -4,8 +4,7 @@
 #
 # The test below is redundant
 
--- require r/not_embedded.require
-disable_query_log;
-select version() like '%embedded%' as 'have_embedded';
-enable_query_log;
+if (`select version() like '%embedded%'`) {
+  This should never happen;
+}
 

mysql-test/r/not_embedded.require

-have_embedded
-0