fix: remove unused import for KubeCon China 2021 slides

Signed-off-by: Lee Calcote <lee.calcote@layer5.io>

Author: leecalcote

src/collections/blog/2022/2022-05-10-dockercon-22-hashicorp-talk/index.mdx

@@ -19,7 +19,6 @@ featured: true
 
 import { BlogWrapper } from "../../Blog.style.js";
 import Blockquote from "../../../../reusecore/Blockquote";
-import slidesTAG from "../../../events/2021/kubecon-china-2021/cncf-tag-network-and-service-mesh-working-group-kubecon-china-2021-lee-calcote-ken-owens.pdf";
 import { Link } from "gatsby";
 import DDE from './docker-extension-meshery.webp';
 import developer from './developers-need.webp';