Merge pull request #9145 from tamasvajk/kotlin-useless-param

Kotlin: Respect `override` modifier in useless parameter query

java/ql/lib/semmle/code/java/deadcode/DeadCode.qll

@@ -302,6 +302,8 @@ class RootdefCallable extends Callable {
     exists(MemberRefExpr mre | mre.getReferencedCallable() = this)
     or
     this.getAnAnnotation() instanceof OverrideAnnotation
+    or
+    this.hasModifier("override")
   }
 }