Remove unused value

src/main/scala/ch/memobase/SettingsFromFile.scala

@@ -63,6 +63,4 @@ object SettingsFromFile {
   val reportTopic: String = sys.env("TOPIC_PROCESS")
 
   val reportingStepName: String = sys.env("REPORTING_STEP_NAME")
-
-  val id: String = "media-metadata-preprocessor"
 }