Introduce Parameter: Remove parameters which become unused after occurrence replacement

idea/testData/refactoring/introduceParameter/functionUsedParameter.kt

@@ -0,0 +1,7 @@
+fun foo(a: Int, s: String): Int {
+    return (<selection>a + 1</selection>) * a
+}
+
+fun test() {
+    foo(1, "2")
+}