Broken import is generated code.

[joeblubaugh]

https://github.com/grafana/grok/blob/28e7a3cd9fa1fb33ba6d9d8c4670d4bd77359c36/types/dashboard/x/goschema/version_gen.go#L8

The coremodel package isn't used anwhere in this generated file, so the dependency won't compile when in use.

[sdboyer]

yuck, that's a rather simple thing to miss