build(deps): bump json-smart from 2.4.7 to 2.4.9

Bumps [json-smart](https://github.com/netplex/json-smart-v2) from 2.4.7 to 2.4.9.
- [Release notes](https://github.com/netplex/json-smart-v2/releases)
- [Commits](https://github.com/netplex/json-smart-v2/commits/2.4.9)

---
updated-dependencies:
- dependency-name: net.minidev:json-smart
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -72,7 +72,7 @@
         <dependency>
             <groupId>net.minidev</groupId>
             <artifactId>json-smart</artifactId>
-            <version>2.4.7</version>
+            <version>2.4.9</version>
             <scope>compile</scope>
         </dependency>
 

src/main/java/cn/celess/blog/controller/CategoryController.java

@@ -36,17 +36,6 @@ public class CategoryController {
     public Response deleteOne(@RequestParam("id") long id) {
         return Response.success(categoryService.delete(id));
     }
-    
-    /**
-     * 删除一个分类
-     *
-     * @param id 分类id
-     * @return Response
-     */
-    @DeleteMapping("/admin/category/del/{id}")
-    public Response deleteOne(@PathVariable("id") long id) {
-        return Response.success(categoryService.delete(id));
-    }
 
     /**
      * 更新一个分类