rm bad reference

docs/devguide/create-metricset.asciidoc

@@ -2,8 +2,7 @@
 === Creating a Metricset
 
 A metricset is the part of a Metricbeat module that fetches and structures the
-data from the remote service. Each module can have multiple metricsets. In this guide, you learn how to create your own metricset. If you want to create
-your own Beat that uses Metricbeat as a library, see <<creating-beat-from-metricbeat>>.
+data from the remote service. Each module can have multiple metricsets. In this guide, you learn how to create your own metricset.
 
 When creating a metricset for the first time, it generally helps to look at the
 implementation of existing metricsets for inspiration.