[gnome-maps] mainWindow: Remove unused action

[Marcus Lundblad <mlundblad src gnome org>]

commit 4fcbf396c9068c2cbad6c665a1aeb84211ef8df6
Author: Marcus Lundblad <ml update uu se>
Date:   Sat Dec 15 16:20:36 2018 +0100

    mainWindow: Remove unused action
    
    The "close" action defined for the
    MainWindow class is never used.

 src/mainWindow.js | 3 ---
 1 file changed, 3 deletions(-)
---
diff --git a/src/mainWindow.js b/src/mainWindow.js
index 1c89f7e..5a70697 100644
--- a/src/mainWindow.js
+++ b/src/mainWindow.js
@@ -184,9 +184,6 @@ var MainWindow = GObject.registerClass({
 
     _initActions() {
         Utils.addActions(this, {
-            'close': {
-                onActivate: () => this.close()
-            },
             'about': {
                 onActivate: () => this._onAboutActivate()
             },