Revert "unlock yang tools repo"

This reverts commit 5dbfd6479d94e982d00203df67f5655ce20c4f3a.

Change-Id: I1221f6ed3dd690bcce7390aa3a7743e5f43aed62
diff --git a/jjb/onos/onos-yang-tools-release-build.sh b/jjb/onos/onos-yang-tools-release-build.sh
index b029e7f..2e3382b 100644
--- a/jjb/onos/onos-yang-tools-release-build.sh
+++ b/jjb/onos/onos-yang-tools-release-build.sh
@@ -24,9 +24,6 @@
 # get the sources
 git checkout $GERRIT_BRANCH
 
-# temp workaround to unlock the repo as Jenkins user
-ssh -p 29418 gerrit.onosproject.org projectlock unlock onos-yang-tools master
-
 # sanity check: does the tag already exist?
 if git rev-parse -q --verify "refs/tags/${YANGTOOLS_VERSION}"; then
   echo "${YANGTOOLS_VERSION} tag already exists"