Gardening: Revert "fix #30423, covariant parameter tearoff type should be Object" (TBR)

pkg/analyzer/lib/src/dart/element/element.dart

Index: pkg/analyzer/lib/src/dart/element/element.dart
diff --git a/pkg/analyzer/lib/src/dart/element/element.dart b/pkg/analyzer/lib/src/dart/element/element.dart
index 2379185a61a6ce8e5960b94b2c6268af82f45187..122de77747d5d01faa4d22802c298c7d936616dc 100644
--- a/pkg/analyzer/lib/src/dart/element/element.dart
+++ b/pkg/analyzer/lib/src/dart/element/element.dart
@@ -7225,10 +7225,6 @@ class MethodElementImpl extends ExecutableElementImpl implements MethodElement {
   MethodDeclaration computeNode() =>
       getNodeMatching((node) => node is MethodDeclaration);
 
-  // TODO(jmesserly): this implementation is completely wrong:
-  // It does not handle covariant parameters from a generic class.
-  // It drops type parameters from generic methods.
-  // Since this method was for DDC, it should be removed.
   @override
   FunctionType getReifiedType(DartType objectType) {
     // Check whether we have any covariant parameters.