chore: two small code cleanups

Author: JoshuaKGoldberg

src/rules/valid-local-dependency.ts

@@ -2,10 +2,6 @@ import path from "path";
 
 import { createRule } from "../createRule.js";
 
-//------------------------------------------------------------------------------
-// Rule Definition
-//------------------------------------------------------------------------------
-
 export default createRule({
 	create(context) {
 		return {

src/rules/valid-package-def.ts

@@ -1,4 +1,3 @@
-"use strict";
 import { PJV as PackageValidator } from "package-json-validator";
 
 import { createRule } from "../createRule.js";