Fix a few tests - fix two whose return values have changes, and

remove the toomanylinks test, since that check has been removed from
tbprerun.

testsuite/testlists/frontend

@@ -24,4 +24,3 @@ cbr
 widearea_types
 widearea_mapped
 toofast
-toomanylinks

testsuite/tests/negprerun/test

-tb_prerun("tbprerun",1);
+tb_prerun("tbprerun",2);

testsuite/tests/toofast/test

-tb_prerun("tbprerun",1);
+tb_prerun("tbprerun",2);