chore: removing unused script (vercel#9854)

### Description

It doesn't look like this is used for anything. 😄

Author: anthonyshew

examples/install-all.ts

@@ -1,9 +1,3 @@
 {
-  "name": "turborepo-examples",
-  "scripts": {
-    "install-all": "tsx install-all.ts"
-  },
-  "devDependencies": {
-    "tsx": "4.19.1"
-  }
+  "name": "turborepo-examples"
 }