Remove the npm gzip script. (#2432)

Since Cloudflare is being used, Brotli compression is used.

Author: XhmikosR

package.json

@@ -8,8 +8,7 @@
     "build:deploy": "node build.js --preserveLocale",
     "serve": "cross-env NODE_ENV=development node server.js",
     "external:survey": "rsync -avz --exclude 'node_modules*' --exclude 'package*' external/survey-2018/ build/en/user-survey-report",
-    "gzip": "find build -type f \\( -name '*.html' -o -name '*.css' -o -name '*.js' -o -name '*.xml' -o -name '*.json' \\) -exec gzip -kf9 {} \\;",
-    "deploy": "npm-run-all load-schedule build:deploy external:survey gzip",
+    "deploy": "npm-run-all load-schedule build:deploy external:survey",
     "load-versions": "node scripts/load-versions.js",
     "load-schedule": "curl -sS https://raw.githubusercontent.com/nodejs/Release/master/schedule.json -o source/schedule.json",
     "start": "npm run serve",