no pillow on linux

Linux_x86_64/update.sh

@@ -5,6 +5,7 @@ cat ../../openmedialibrary/requirements.txt \
     | grep -v lxml \
     | grep -v pyopenssl \
     | grep -v pyCrypto \
+    | grep -v pillow \
     | grep -v simplejson \
     > requirements.txt
 echo setuptools >> requirements.txt