Cleanup Session

CommonCore/SQL/src/de/steamwar/sql/Session.kt

@@ -33,8 +33,7 @@ object SessionTable: Table("Session") {
     val endTime = timestamp("EndTime").defaultExpression(CurrentTimestamp)
 }
 
-class Session {
-    companion object {
+object Session {
     @JvmStatic
     fun insertSession(userId: Int, startTime: Timestamp) = useDb {
         SessionTable.insert {
@@ -43,4 +42,3 @@ class Session {
         }
     }
 }
-}