linter: Remove analyzer impl export

This reduce's linter's exposure of private analyzer API, which will
help with making LintRule public API.

Change-Id: I5af1961cf6e7e6c8554962d055a2f311256e3895
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/428901
Reviewed-by: Keerti Parthasarathy <[email protected]>
Commit-Queue: Samuel Rawlins <[email protected]>

Author: srawlins

pkg/linter/lib/src/analyzer.dart

@@ -4,7 +4,6 @@
 
 export 'package:analyzer/dart/element/type_system.dart';
 export 'package:analyzer/source/line_info.dart';
-export 'package:analyzer/src/dart/ast/token.dart';
 export 'package:analyzer/src/dart/element/inheritance_manager3.dart'
     show InheritanceManager3, Name;
 export 'package:analyzer/src/dart/error/lint_codes.dart';

pkg/linter/lib/src/rules/dangling_library_doc_comments.dart

@@ -6,6 +6,7 @@ import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/error/error.dart';
+import 'package:analyzer/src/dart/ast/token.dart'; // ignore: implementation_imports
 
 import '../analyzer.dart';
 

pkg/linter/lib/src/rules/invalid_case_patterns.dart

@@ -7,6 +7,7 @@ import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/error/error.dart';
+import 'package:analyzer/src/dart/ast/token.dart'; // ignore: implementation_imports
 
 import '../analyzer.dart';
 import '../extensions.dart';

pkg/linter/lib/src/rules/unnecessary_brace_in_string_interps.dart

@@ -6,6 +6,7 @@ import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/error/error.dart';
+import 'package:analyzer/src/dart/ast/token.dart'; // ignore: implementation_imports
 
 import '../analyzer.dart';
 

pkg/linter/tool/checks/rules/no_trailing_spaces.dart

@@ -5,6 +5,7 @@
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/error/error.dart';
+import 'package:analyzer/src/dart/ast/token.dart';
 import 'package:linter/src/analyzer.dart';
 
 const _desc = r"Don't create string literals with trailing spaces in tests.";