Mark required call with 'caret' in abstract resolved calls test

compiler/testData/resolvedCalls/hasBothThisObjectAndReceiverArgumentWithoutExplicitReceiver.kt

@@ -1,5 +1,3 @@
-// !CALL: foo
-
 class A {
     fun B.foo() {}
 }
@@ -9,7 +7,7 @@ trait B
 fun bar(a: A, b: B) {
     with (a) {
         with (b) {
-            foo()
+            <caret>foo()
         }
     }
 }