remove unused check

app/components/SimpleEditor/Overlay.js

-import { ProseEditorOverlayTools, documentHelpers } from 'substance'
+import { ProseEditorOverlayTools } from 'substance'
 import { each, includes, keys } from 'lodash'
 
 class Overlay extends ProseEditorOverlayTools {
   render ($$) {
     const surface = this.getSurface()
-    const session = this.context.documentSession
-    const sel = session.getSelection()
-    const comment = documentHelpers.getPropertyAnnotationsForSelection(
-      session.getDocument(),
-      sel,
-      { type: 'commnent' }
-    )
 
-    if (surface && surface.props.canNotEdit && typeof comment[0] === 'undefined') {
+    if (surface && surface.props.canNotEdit) {
       const commandStates = this.context.commandManager.getCommandStates()
       each(keys(commandStates), (key) => {
         const allowed = ['comment', 'save']