Drop pomExtra scm definitions (now generated by git.remoteRepo.

Author: ucbjrl

build.sbt

@@ -63,6 +63,7 @@ lazy val publishSettings = Seq (
   publishMavenStyle := true,
   publishArtifact in Test := false,
   pomIncludeRepository := { x => false },
+  // Don't add 'scm' elements if we have a git.remoteRepo definition.
   pomExtra := <url>http://chisel.eecs.berkeley.edu/</url>
     <licenses>
       <license>
@@ -71,10 +72,6 @@ lazy val publishSettings = Seq (
         <distribution>repo</distribution>
       </license>
     </licenses>
-    <scm>
-      <url>https://github.com/freechipsproject/chisel3.git</url>
-      <connection>scm:git:github.com/freechipsproject/chisel3.git</connection>
-    </scm>
     <developers>
       <developer>
         <id>jackbackrack</id>