Remove deployment scripts and gh-pages dependency from package.json

Author: adimoldovan

package.json

@@ -33,8 +33,6 @@
     "build": "react-scripts build",
     "test": "react-scripts test",
     "eject": "react-scripts eject",
-    "predeploy": "npm run build",
-    "deploy": "gh-pages -d build -m 'Pushing to gh-pages'",
     "lint": "eslint --ext .js,.jsx,.cjs,.mjs,.ts,.tsx .",
     "prettier": "prettier --write '**/*.{js,jsx,ts,tsx}'"
   },
@@ -60,7 +58,6 @@
     "@slack/web-api": "6.7.2",
     "@wordpress/eslint-plugin": "9.3.0",
     "eslint": "^7.32.0",
-    "gh-pages": "^6.3.0",
     "node-fetch": "2.6.7",
     "prettier": "npm:wp-prettier@^2.6.2-beta-1"
   }