contrib/jenkins: don't build osmo-gsm-manuals

Related: OS#4912
Change-Id: Ie2f193656386038872adddfbd770ea193ace92e5
diff --git a/contrib/jenkins.sh b/contrib/jenkins.sh
index 39d7f4c..d69fcbb 100755
--- a/contrib/jenkins.sh
+++ b/contrib/jenkins.sh
@@ -67,7 +67,6 @@
 
 # manuals build + optional publication
 if [ "$WITH_MANUALS" = "1" ]; then
-	osmo-build-dep.sh osmo-gsm-manuals
 	make -C doc/manuals clean all
 	if [ "$PUBLISH" = "1" ]; then
 		make -C doc/manuals publish