Revert "Gang rework"

src/NetscriptWorker.js

@@ -14,6 +14,7 @@ import {NetscriptPort}                      from "./NetscriptPort";
 import {AllServers}                         from "./Server";
 import {Settings}                           from "./Settings";
 
+//TODO Maybe escodegen might be better?
 import {generate}                           from 'escodegen';
 
 import {parse, Node}                        from "../utils/acorn";
@@ -137,18 +138,7 @@ function startNetscript2Script(workerScript) {
                 throw workerScript;
             }
             runningFn = propName;
-
-            // If the function throws an error, clear the runningFn flag first, and then re-throw it
-            // This allows people to properly catch errors thrown by NS functions without getting
-            // the concurrent call error above
-            let result;
-            try {
-                result = f(...args);
-            } catch(e) {
-                runningFn = null;
-                throw(e);
-            }
-
+            let result = f(...args);
             if (result && result.finally !== undefined) {
                 return result.finally(function () {
                     runningFn = null;