Merge pull request #10789 from tamasvajk/kotlin-useless-params

Kotlin: reduce FPs in useless parameter check for Kotlin code

java/ql/test/kotlin/query-tests/UselessParameter/Test.kt

@@ -7,3 +7,5 @@ class B : A<B, Int> {
         println("a")
     }
 }
+
+fun fn(a: Int = 10) {}

java/ql/test/kotlin/query-tests/UselessParameter/UselessParameter.expected

@@ -0,0 +1 @@
+| Test.kt:11:8:11:18 | a | The parameter 'a' is never used. |