Remove unnecessary overrides of PropertyAccessorElementImpl.operator== and hashCode

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 bc2b7d04b89fc3c2d1a3224c56e30ef60da79e85..23ca6fdebddd6fc8bc371f876ef3be9b39a568a3 100644
--- a/pkg/analyzer/lib/src/dart/element/element.dart
+++ b/pkg/analyzer/lib/src/dart/element/element.dart
@@ -7528,9 +7528,6 @@ class PropertyAccessorElementImpl extends ExecutableElementImpl
   }
 
   @override
-  int get hashCode => JenkinsSmiHash.hash2(super.hashCode, isGetter ? 1 : 2);
-
-  @override
   String get identifier {
     String name = displayName;
     String suffix = isGetter ? "?" : "=";
@@ -7598,11 +7595,6 @@ class PropertyAccessorElementImpl extends ExecutableElementImpl
   }
 
   @override
-  bool operator ==(Object object) =>
-      super == object &&
-      isGetter == (object as PropertyAccessorElement).isGetter;
-
-  @override
   accept(ElementVisitor visitor) => visitor.visitPropertyAccessorElement(this);
 
   @override