Fix 2.10 build

Author: olafurpg

build.sbt

@@ -10,7 +10,7 @@ val V = new {
 scalaVersion := V.scala212
 ThisBuild / scalafixDependencies += "com.github.liancheng" %% "organize-imports" % "0.5.0-alpha.1"
 organization := "com.sourcegraph"
-semanticdbEnabled := true
+semanticdbEnabled := !scalaVersion.value.startsWith("2.10")
 semanticdbVersion := "4.4.26"
 homepage := Some(url("https://github.com/sourcegraph/sbt-sourcegraph"))
 licenses := List(