Don't force exposing gc

main.js

@@ -3,7 +3,6 @@ const fs = require("fs");
 const path = require("path");
 const client = require("./client.js");
 const util = require("./util.js");
-require("v8").setFlagsFromString("--expose_gc");
 global.gc = require("vm").runInNewContext("gc");
 
 const REACT_PROBABILITY = 0.6;