NETSCRIPT: Revert infinite loop detection (#404)

src/Netscript/NetscriptHelpers.ts

@@ -33,7 +33,6 @@ import { BaseServer } from "../Server/BaseServer";
 import { dialogBoxCreate } from "../ui/React/DialogBox";
 import { checkEnum } from "../utils/helpers/enum";
 import { RamCostConstants } from "./RamCostGenerator";
-import { Settings } from "../Settings/Settings";
 
 export const helpers = {
   string,
@@ -304,15 +303,6 @@ function checkSingularityAccess(ctx: NetscriptContext): void {
   }
 }
 
-/** The last time the page was able to update this tracking variable, which is used for timeout detection */
-let lastTime = Date.now();
-setInterval(() => (lastTime = Date.now()), 1000);
-// This event should prevent false positive timeout errors when user alt-tabs / otherwise hides the window
-document.addEventListener(
-  "visibilitychange",
-  () => (lastTime = document.visibilityState === "hidden" ? Infinity : Date.now()),
-);
-
 /** Create an error if a script is dead or if concurrent ns function calls are made */
 function checkEnvFlags(ctx: NetscriptContext): void {
   const ws = ctx.workerScript;
@@ -333,17 +323,6 @@ function checkEnvFlags(ctx: NetscriptContext): void {
       "CONCURRENCY",
     );
   }
-  // 8s allows scripts at least 7s of synchronous execution time before error, since updates are every 1s.
-  if (Settings.infiniteLoopDetection && Date.now() - 8000 > lastTime) {
-    // Prevent error getting piggybacked to another script due to a stale timer.
-    lastTime = Date.now();
-
-    throw makeRuntimeErrorMsg(
-      ctx,
-      "Possible infinite loop detected while running function.\nThis error is enabled by Options -> System -> Infinite loop detection.",
-      "EXECUTION TIMEOUT",
-    );
-  }
 }
 
 /** Set a timeout for performing a task, mark the script as busy in the meantime. */