Omit legacy npm job with nodejs4-publish-to-npm

When using the nodejs4-publish-to-npm project-template, its
release-openstack-javascript job is redundant with the
legacy-npm-upload job so remove the latter. Also in the case of
monasca-grafana-datasource there's no need for
publish-openstack-python-tarball since it doesn't work on that
project and was only added to satisfy (potentially invalid)
dependencies of the legacy-npm-upload job.

Change-Id: I7f1e98d0caee791271dcb08bbf4a76154fb065a3

zuul.d/projects.yaml

@@ -8578,12 +8578,6 @@
       - system-required
       - nodejs4-publish-to-npm
       - noop-jobs
-    release:
-      jobs:
-        - publish-openstack-python-tarball
-        - legacy-npm-upload:
-            dependencies:
-              - publish-openstack-python-tarball
 
 - project:
     name: openstack/monasca-kibana-plugin
@@ -8591,12 +8585,6 @@
       - system-required
       - nodejs4-jobs
       - nodejs4-publish-to-npm
-    release:
-      jobs:
-        - publish-openstack-python-tarball
-        - legacy-npm-upload:
-            dependencies:
-              - publish-openstack-python-tarball
 
 - project:
     name: openstack/monasca-log-api