KT-6671 Report unused constructor parameters

#KT-6671 fixed

compiler/testData/diagnostics/tests/delegatedProperty/genericGetter.kt

@@ -1,6 +1,6 @@
 val a: Int by A(1)
 
-class A<T: Any>(i: T) {
+class A<T: Any>(<!UNUSED_PARAMETER!>i<!>: T) {
   fun get(t: Any?, p: PropertyMetadata): T {
     t.equals(p) // to avoid UNUSED_PARAMETER warning
     throw Exception()

compiler/testData/diagnostics/tests/delegatedProperty/recursiveType.kt

@@ -5,7 +5,7 @@ val b by Delegate(<!TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM!>b<!>)
 val c by <!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>d<!>
 val d by <!TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM!>c<!>
 
-class Delegate(i: Int) {
+class Delegate(<!UNUSED_PARAMETER!>i<!>: Int) {
   fun get(t: Any?, p: PropertyMetadata): Int {
     t.equals(p) // to avoid UNUSED_PARAMETER warning
     return 1

compiler/testData/diagnostics/tests/delegatedProperty/thisInDelegate.kt

@@ -4,7 +4,7 @@ class A {
   val Int.a by Delegate(<!TYPE_MISMATCH!>this<!>)
 }
 
-class Delegate(i: Int) {
+class Delegate(<!UNUSED_PARAMETER!>i<!>: Int) {
   fun get(t: Any?, p: PropertyMetadata): Int {
     t.equals(p) // to avoid UNUSED_PARAMETER warning
     return 1