move runtime/tools/wiki/xref_extractor to package:lints

Change-Id: Ifdf6419bf42baa4dc6df1b4e140e6239d379fe36
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/240916
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Devon Carew <devoncarew@google.com>

runtime/tools/wiki/xref_extractor/analysis_options.yaml

@@ -1,14 +1 @@
-# Defines a default set of lint rules enforced for
-# projects at Google. For details and rationale,
-# see https://github.com/dart-lang/pedantic#enabled-lints.
-include: package:pedantic/analysis_options.yaml
-
-# For lint rules and documentation, see http://dart-lang.github.io/linter/lints.
-# Uncomment to specify additional rules.
-# linter:
-#   rules:
-#     - camel_case_types
-
-analyzer:
-#   exclude:
-#     - path/to/excluded/files/**
+include: package:lints/core.yaml

runtime/tools/wiki/xref_extractor/lib/cquery_driver.dart

@@ -196,5 +196,5 @@ class _JsonRpcParser {
   static const CH0 = 48;
   static const CH9 = 57;
   static const CR = 13;
-  static const LF = 10;
+  static const LF = 10; // ignore: unused_field
 }

runtime/tools/wiki/xref_extractor/pubspec.yaml

@@ -1,7 +1,7 @@
 name: xref_extractor
 description: A sample command-line application.
-# version: 1.0.0
-# homepage: https://www.example.com
+# This package is not intended for consumption on pub.dev. DO NOT publish.
+publish_to: none
 
 environment:
   sdk: '>=2.7.0 <3.0.0'
@@ -10,4 +10,4 @@ dependencies:
   path: ^1.6.0
 
 dev_dependencies:
-  pedantic: ^1.8.0
+  lints: any