Disable scaladoc generation for dotty

This makes "publishLocal" much faster which is extremely useful when
working on the sbt bridge.

Author: smarter

project/Build.scala

@@ -64,6 +64,9 @@ object DottyBuild extends Build {
   lazy val dotty = project.in(file(".")).
     dependsOn(`dotty-interfaces`).
     settings(
+      // Disable scaladoc generation, makes publishLocal much faster
+      publishArtifact in packageDoc := false,
+
       overrideScalaVersionSetting,
 
       // set sources to src/, tests to test/ and resources to resources/