[gnome-maps] trivial: Remove unneeded TODO comment

[Marcus Lundblad <mlundblad src gnome org>]

commit dc862b8b05f6f0297bc0e78eebaf76395a53b436
Author: Marcus Lundblad <ml update uu se>
Date:   Tue Jun 13 22:28:35 2017 +0200

    trivial: Remove unneeded TODO comment
    
    Even though we show an "E-mail" label for the OSM account
    credentials, it will probably work with the OSM user name.

 src/osmAccountDialog.js |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/osmAccountDialog.js b/src/osmAccountDialog.js
index 0e695e9..cf92155 100644
--- a/src/osmAccountDialog.js
+++ b/src/osmAccountDialog.js
@@ -86,8 +86,7 @@ const OSMAccountDialog = new Lang.Class({
         let email = this._emailEntry.text;
         let password = this._passwordEntry.text;
 
-        /* make sign in button sensitive if credential have been entered
-            TODO: should we try to validate email addresses? */
+        // make sign in button sensitive if credential have been entered
         this._signInButton.sensitive =
             email && email.length > 0 && password && password.length > 0;
     },