Revert "fix #30462, update function_type tests to understand covariant generics"

tests/language_2/function_type/function_type33_test.dart

Index: tests/language_2/function_type/function_type33_test.dart
diff --git a/tests/language_2/function_type/function_type33_test.dart b/tests/language_2/function_type/function_type33_test.dart
index b3f0e95411fa674e76e267896a696f79cc37488b..754bd44d3f44249c6a2a027d7337b3737927aa09 100644
--- a/tests/language_2/function_type/function_type33_test.dart
+++ b/tests/language_2/function_type/function_type33_test.dart
@@ -296,10 +296,10 @@ class U33<T> {
       });
     }
     if (tIsInt || tIsBool) {
-      Expect.equals(true, m3 is F3<int>);
-      Expect.equals(true, m3 is F3<bool>);
-      Expect.equals(true, confuse(m3) is F3<int>);
-      Expect.equals(true, confuse(m3) is F3<bool>);
+      Expect.equals(tIsInt, m3 is F3<int>);
+      Expect.equals(tIsBool, m3 is F3<bool>);
+      Expect.equals(tIsInt, confuse(m3) is F3<int>);
+      Expect.equals(tIsBool, confuse(m3) is F3<bool>);
     }
   }