X compilebench: Don't spend time on clang

It is close to gcc.

t/compilebench/doit.sh

@@ -37,7 +37,8 @@ for i in `seq $N`; do
 	python pystone.py |pystone2bench py
 done
 
-for CC in gcc clang tcc; do
+#for CC in gcc clang tcc; do	# clang is close to gcc - don't spend time on it
+for CC in gcc tcc; do
 	echo "CC=$CC"
 	rm -f pystone_pyxtest.{o,so}