Remove local resolver

This is most likely a left over from some previous testing.
There is no reason to have a local resolver in production code.

Change-Id: Iec8a89c83f79ffc4ca68ec80876e3d3b49bc7937

build.sbt

diff --git a/build.sbt b/build.sbt
index f34f073..bcb0591 100644
--- a/build.sbt
+++ b/build.sbt
@@ -11,7 +11,6 @@
 lazy val root = (project in file("."))
   .settings(
     name := pluginName,
-    resolvers += Resolver.mavenLocal,
     version := gerritApiVersion,
 
     scalaVersion := "2.11.12",