Remove crash detection

src/lib/tw-editor-warning-hoc.jsx

@@ -7,28 +7,18 @@ let shownWarning = false;
 
 const DIRTY_KEY = 'tw:dirty';
 
+// Attempt to clean up old values from local storage (temporary)
+try {
+    localStorage.removeItem(DIRTY_KEY);
+} catch (e) {
+    // ignore
+}
+
 const TWEditorWarningHOC = function (WrappedComponent) {
     class EditorWarningComponent extends React.Component {
         componentDidMount () {
-            // This makes it so that if the VM ever is unable to finish a frame, we may be able to detect it.
-            // This isn't foolproof, but it's better than nothing.
-            this.props.vm.runtime.beforeStep = () => {
-                if (!this.props.isPlayerOnly && !document.hidden) {
-                    localStorage.setItem(DIRTY_KEY, '1');
-                }
-            };
-            this.props.vm.runtime.afterStep = () => {
-                if (!this.props.isPlayerOnly && !document.hidden) {
-                    localStorage.setItem(DIRTY_KEY, '0');
-                }
-            };
-
             if (!shownWarning) {
                 this.showWarningIfInEditor();
-
-                if (localStorage.getItem(DIRTY_KEY) === '1') {
-                    this.props.onShowRecovery();
-                }
             }
         }
         shouldComponentUpdate () {