[gnome-shell] dateMenu: Remove obsolete comment

[Florian Müllner <fmuellner src gnome org>]

commit 3ba8a578e8c2868c2c08ce3dab66f1dd8e228d82
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Feb 18 06:02:37 2015 +0100

    dateMenu: Remove obsolete comment
    
    The events list has been always defined since commit ca2e09fe8be2
    about 2 1/2 years ago ...

 js/ui/dateMenu.js |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/js/ui/dateMenu.js b/js/ui/dateMenu.js
index 7ff75f7..5dbdfb8 100644
--- a/js/ui/dateMenu.js
+++ b/js/ui/dateMenu.js
@@ -80,10 +80,6 @@ const DateMenuButton = new Lang.Class({
 
         this._calendar.connect('selected-date-changed',
                                Lang.bind(this, function(calendar, date) {
-                                  // we know this._eventList is defined here, because selected-data-changed
-                                  // only gets emitted when the user clicks a date in the calendar,
-                                  // and the calender makes those dates unclickable when instantiated with
-                                  // a null event source
                                    this._eventList.setDate(date);
 
                                    // Make the button reactive only if the selected date is not the current 
date.