Updated makefile for Jenkins build

Change-Id: I1b0f31b72698c513b7bb1e7307aeb246934e2c45
Signed-off-by: Helena McGough <helena.mcgough@intel.com>
diff --git a/Makefile b/Makefile
index f789f38..a881380 100644
--- a/Makefile
+++ b/Makefile
@@ -31,6 +31,7 @@
 clean:
 	rm -rf build
 	rm -rf .build
+	find . -name '*.pyc' -delete
 
 prepare:
 	#apt-get --yes install python-stdeb python-pip libmysqlclient-dev debhelper