Deprecate PropertyMetadata, use KProperty<*> for delegated properties instead

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

@@ -1,15 +1,17 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+import kotlin.reflect.KProperty
+
 class A {
     val c: Int by <!DELEGATE_SPECIAL_FUNCTION_NONE_APPLICABLE!>Delegate()<!>
 }
 
 class Delegate {
-    fun getValue(t: Int, p: PropertyMetadata): Int {
-        t.equals(p) // to avoid UNUSED_PARAMETER warning
+    fun getValue(t: Int, p: KProperty<*>): Int {
         return 1
     }
 
-    fun getValue(t: String, p: PropertyMetadata): Int {
-        t.equals(p) // to avoid UNUSED_PARAMETER warning
+    fun getValue(t: String, p: KProperty<*>): Int {
         return 1
     }
 }