Remove changes to devel makefile
diff --git a/xos/configurations/devel/Makefile b/xos/configurations/devel/Makefile
index 2cbc1d0..3ce188b 100644
--- a/xos/configurations/devel/Makefile
+++ b/xos/configurations/devel/Makefile
@@ -5,7 +5,7 @@
 test: common_cloudlab
 	echo "# Autogenerated -- do not edit" > Dockerfile
 	cat ../common/Dockerfile.common Dockerfile.devel >> Dockerfile
-	cd ../../..; sudo docker build --no-cache -t xos -f xos/configurations/devel/Dockerfile .
+	cd ../../..; sudo docker build -t xos -f xos/configurations/devel/Dockerfile .
 	sudo docker run -d --add-host="ctl:$(MYIP)" -p 9999:8000 xos
 	bash ../common/wait_for_xos.sh