Elements. Remove FindElement.

Change-Id: I609c5b2ea73debf7dba6f7b42949e1329eb302a5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/414823
Reviewed-by: Paul Berry <[email protected]>
Commit-Queue: Konstantin Shcheglov <[email protected]>

Author: scheglov

pkg/analyzer/lib/src/test_utilities/find_element.dart

@@ -947,12 +947,12 @@ class FieldElementImplTest extends PubPackageResolutionTest {
     await resolveTestCode(r'''
 enum B {B1, B2, B3}
 ''');
-    var B = findElement.enum_('B');
+    var B = findElement2.enum_('B');
 
-    FieldElement b2Element = B.getField('B2')!;
+    var b2Element = B.getField2('B2')!;
     expect(b2Element.isEnumConstant, isTrue);
 
-    FieldElement valuesElement = B.getField('values')!;
+    var valuesElement = B.getField2('values')!;
     expect(valuesElement.isEnumConstant, isFalse);
   }
 }