Remove obsolete gerrit branch go-import build lines

Change-Id: I0b748efb59af205760ebfe81089c8aca0463739c
diff --git a/jenkins/gerrit-bazel-plugin-go-import.yaml b/jenkins/gerrit-bazel-plugin-go-import.yaml
index 3b3617b..86b4385 100644
--- a/jenkins/gerrit-bazel-plugin-go-import.yaml
+++ b/jenkins/gerrit-bazel-plugin-go-import.yaml
@@ -1,13 +1,9 @@
 - project:
     name: go-import
     jobs:
-      - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
-          branch:
-            - master
-          gerrit-branch:
-            - master
       - 'plugin-{name}-bazel-{branch}':
           branch:
+            - master
             - stable-3.4
             - stable-3.3
             - stable-3.2