remove unused 'assert' dependency (#24)

It's not used anywhere in the `src` or the generated `lib` dirs

Author: ChALkeR

package.json

@@ -38,7 +38,6 @@
   },
   "dependencies": {
     "@solana/web3.js": "^1.30.2",
-    "assert": "^2.0.0",
     "buffer": "^6.0.1"
   }
 }