build(deps): bump spring-boot-starter-parent from 2.1.3.RELEASE to 3.0.3

Bumps [spring-boot-starter-parent](https://github.com/spring-projects/spring-boot) from 2.1.3.RELEASE to 3.0.3.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](https://github.com/spring-projects/spring-boot/compare/v2.1.3.RELEASE...v3.0.3)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-starter-parent
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.3.RELEASE</version>
+        <version>3.0.3</version>
         <relativePath/>
     </parent>
     <groupId>cn.celess</groupId>

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

@@ -37,17 +37,6 @@ public class CategoryController {
         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
      *