chore: remove listeners when destroying view (#63)

Author: Hypnosphi

src/executable-code/executable-fragment.js

@@ -546,6 +546,7 @@ export default class ExecutableFragment extends ExecutableCodeTemplate {
     this.jsExecutor = false;
     this.state = null;
     this.codemirror.toTextArea();
+    this.off();
     this.remove();
   }
 }