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

compiler/testData/diagnostics/tests/variance/VarProperty.kt

@@ -1,10 +1,12 @@
+import kotlin.reflect.KProperty
+
 interface In<in T>
 interface Out<out T>
 interface Inv<T>
 
 class Delegate<T> {
-    operator fun getValue(t: Any, p: PropertyMetadata): T = null!!
-    operator fun setValue(t: Any, p: PropertyMetadata, varue: T) {}
+    operator fun getValue(t: Any, p: KProperty<*>): T = null!!
+    operator fun setValue(t: Any, p: KProperty<*>, varue: T) {}
 }
 
 fun <T> getT(): T = null!!
@@ -45,4 +47,4 @@ abstract class Test<in I, out O, P> {
     var <X> X.typeParameter8: Int where X : P get() = 0; set(i) {}
     var <X> X.typeParameter9: Int where X : In<<!TYPE_VARIANCE_CONFLICT(I; in; out; In<I>)!>I<!>> get() = 0; set(i) {}
     var <X> X.typeParameter0: Int where X : In<O> get() = 0; set(i) {}
-}
+}