grails-plugin-tomcat-8.0.14.jar not found

When upgrading from tomcat:7.0.54 to tomcat:8.0.14 I got the output below after ```grails run-app```. I assume this is a leftover from moving the tomcat8 plugin to tomcat.

```
| Error Tomcat plugin classes JAR grails-plugin-tomcat-8.0.14.jar not found
| Running Grails application
Error: Could not find or load main class org.grails.plugins.tomcat.fork.ForkedTomcatServer
| Error Forked Grails VM exited with error
```