Drop branch parameter from release-job projects

None of the maven, docker, packagecloud release job templates accepts
a branch parameter, the jobs are triggered by any change in the
[.]releases/ directory on any branch.

Signed-off-by: Lott, Christopher (cl778h) <cl778h@att.com>
Change-Id: I01dba6a4208a33b64e97e64e75aead02c6f8e7d1
diff --git a/jjb/it-test/it-test.yaml b/jjb/it-test/it-test.yaml
index f45b777..4d9fa57 100644
--- a/jjb/it-test/it-test.yaml
+++ b/jjb/it-test/it-test.yaml
@@ -71,9 +71,8 @@
 - project:
     <<: *it_test_common
     name: it-test-release
-    branch: master
     # maven release requires sigul which requires centos
     # container release requires docker
     build-node: centos7-docker-2c-8g
     jobs:
-      - '{project-name}-gerrit-release-jobs'
\ No newline at end of file
+      - '{project-name}-gerrit-release-jobs'