Remove job building codemirror editor plugin

This plugin is a core-plugin and thus does not have to be built
separately.

Issue: 13091
Change-Id: I2d3ab8bb070df2fe38890db95667a9316298e9f8
diff --git a/jenkins/gerrit-bazel-plugin-codemirror-editor.yaml b/jenkins/gerrit-bazel-plugin-codemirror-editor.yaml
deleted file mode 100644
index 28be128..0000000
--- a/jenkins/gerrit-bazel-plugin-codemirror-editor.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-- project:
-    name: codemirror-editor
-    jobs:
-      - 'plugin-{name}-bazel-{branch}':
-          branch:
-            - master