== turned into a safe-call

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

@@ -1,10 +1,11 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
 abstract class A {
     abstract val a: Int <!ABSTRACT_DELEGATED_PROPERTY!>by Delegate()<!>
 }
 
 class Delegate {
   fun get(t: Any?, p: PropertyMetadata): Int {
-    t.equals(p) // to avoid UNUSED_PARAMETER warning
     return 1
   }
 }