== turned into a safe-call

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

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