Elements. Remove ConstructorFragment.nameEnd and periodOffset.

Change-Id: I1edac0c407026871bf1e2c07352529eb83d688b4
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/390813
Reviewed-by: Phil Quitslund <[email protected]>
Reviewed-by: Brian Wilkerson <[email protected]>
Commit-Queue: Konstantin Shcheglov <[email protected]>

Author: scheglov

pkg/analyzer/lib/dart/element/element2.dart

@@ -278,19 +278,9 @@ abstract class ConstructorFragment implements ExecutableFragment {
   @override
   ConstructorFragmentName? get name2;
 
-  /// The offset of the end of the name in this fragment.
-  ///
-  /// Returns `null` if the fragment has no name.
-  int? get nameEnd;
-
   @override
   ConstructorFragment? get nextFragment;
 
-  /// The offset of the `.` before the constructor name.
-  ///
-  /// Returns `null` if the constructor is unnamed.
-  int? get periodOffset;
-
   @override
   ConstructorFragment? get previousFragment;
 }