移除导入时的缩略图生成

package.json

@@ -2,13 +2,9 @@
   "name": "spineviewer",
   "version": "1.1.1",
   "description": "Eagle 插件：离线预览 Spine 导出的骨骼动画（skel / skel.bytes / json / atlas / atlas.txt / png / jpg / jpeg / webp）",
-  "main": "thumbnail/spine.js",
   "private": true,
   "type": "commonjs",
   "scripts": {
     "check:release": "node tests/release-package.test.js"
-  },
-  "dependencies": {
-    "@napi-rs/canvas": "^0.1.66"
   }
 }