remove unused scala-reflect dependency

Author: xuwei-k

build.sbt

@@ -44,7 +44,6 @@ scalacOptions ++= (
 val jacksonVersion = "2.9.4"
 
 libraryDependencies ++= Seq(
-    "org.scala-lang" % "scala-reflect" % scalaVersion.value,
     "com.fasterxml.jackson.core" % "jackson-core" % jacksonVersion,
     "com.fasterxml.jackson.core" % "jackson-annotations" % jacksonVersion,
     "com.fasterxml.jackson.core" % "jackson-databind" % jacksonVersion,