remove old homebrew scripts

Author: rose-m

package.json

@@ -50,7 +50,6 @@
     "evergreen-release": "node scripts/evergreen-release.js",
     "report-missing-help": "lerna run --stream --scope @mongosh/shell-api report-missing-help",
     "report-supported-api": "lerna run --stream --scope @mongosh/shell-api report-supported-api",
-    "generate-homebrew-formula": "node scripts/generate-homebrew-formula",
     "report-coverage": "nyc report --reporter=text --reporter=html && nyc check-coverage --lines=95",
     "generate-error-overview": "lerna run --stream --scope @mongosh/errors generate-error-overview"
   },