Remove scala dependency and suffix from api

The api is written in java. It doesn't use scala, so we can remove it
from the dependencies. We can also drop the scala version suffix,
because it is theoretically compatible with any scala version.

Author: hlxid

build.sbt

@@ -7,6 +7,11 @@ val majorVersion = 3
 val minorVersion = 0
 version := s"$majorVersion.$minorVersion"
 
+// The API doesn't use scala. We can safely drop the scala version suffix from the jar and
+// drop the dependency on the scala library.
+autoScalaLibrary := false
+crossPaths := false
+
 import org.codeoverflow.chatoverflow.build.BuildUtils
 javacOptions ++= BuildUtils.getJava8CrossOptions