Delete old build script

Author: annajowang

packages/@apphosting/build/package.json

@@ -8,7 +8,6 @@
         "url": "git+https://github.com/FirebaseExtended/firebase-framework-tools.git"
     },
     "bin": {
-        "build": "dist/bin/build.js",
         "apphosting-local-build": "dist/bin/localbuild.js"
     },
     "author": {

packages/@apphosting/build/src/bin/build.ts

@@ -16,6 +16,5 @@
   ],
   "exclude": [
     "src/*.spec.ts",
-    "src/bin/build.ts"
     ]
 }