build: remove extra info in package.json

Author: swsoyee

package.json

@@ -23,14 +23,5 @@
   "bugs": {
     "url": "https://github.com/swsoyee/highlightjs-spl/issues"
   },
-  "homepage": "https://github.com/swsoyee/highlightjs-spl",
-  "devDependencies": {
-    "eslint": "^7.23.0",
-    "eslint-config-standard": "^16.0.2",
-    "eslint-plugin-import": "^2.22.1",
-    "eslint-plugin-node": "^11.1.0",
-    "eslint-plugin-promise": "^4.3.1",
-    "webpack-cli": "^4.6.0",
-    "webpack": "^5.28.0"
-  }
+  "homepage": "https://github.com/swsoyee/highlightjs-spl"
 }