[linter] Update lint since info for 3.5 release

Also removes the group from the generated machine.json file as they are no longer the same 3.

Change-Id: I92d4ef8cd655cc4efaa6b37fcdf56611494ac635
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/379140
Reviewed-by: Phil Quitslund <[email protected]>
Reviewed-by: Brian Wilkerson <[email protected]>
Commit-Queue: Phil Quitslund <[email protected]>

Author: parlough

pkg/linter/CHANGELOG.md

@@ -1,4 +1,9 @@
-# 3.5.0-wip
+# 3.6.0-wip
+
+- new _(experimental)_ lint: `omit_obvious_local_variable_types`
+- new lint: `use_truncating_division`
+
+# 3.5.0
 
 - new lint: `unintended_html_in_doc_comment`
 - new lint: `invalid_runtime_check_with_js_interop_types`

pkg/linter/tool/machine.dart

@@ -74,7 +74,6 @@ Future<String> getMachineListing(
         'name': rule.name,
         'description': rule.description,
         'categories': rule.categories.toList(),
-        'group': rule.categories.firstOrNull ?? '',
         'state': rule.state.label,
         'incompatible': rule.incompatibleRules,
         'sets': [