chore(mail): remove UIxMailFolderMenu.wox

UI/Templates/MailerUI/UIxMailFolderMenu.wox

@@ -1,39 +0,0 @@
-<?xml version='1.0' standalone='yes'?>
-  <container xmlns="http://www.w3.org/1999/xhtml"
-    xmlns:var="http://www.skyrix.com/od/binding"
-    xmlns:const="http://www.skyrix.com/od/constant"
-    xmlns:uix="OGo:uix"
-    xmlns:rsrc="OGo:url"
-    xmlns:label="OGo:label"
-    className="UIxMailFolderMenu"
-    title="panelTitle"
-    >
-
-    <div class="menu" var:id="menuId">
-      <ul id="">
-        <var:foreach list="levelledNodes" item="item"
-          ><var:if condition="item.hasChildren" const:negate="YES"
-            ><li onmouseup="processMailboxMenuAction(this);" var:mailboxname="item.name"><img var:src="iconForMenuItem" /><var:string value="item.title" /></li>
-          </var:if
-          ><var:if condition="item.hasChildren"
-            ><li
-              class="submenu"
-              var:submenu="item.folderMenuId"
-              onmouseover="dropDownSubmenu(event);"
-              onmousedown="return false;"><img var:src="iconForMenuItem" /><var:string value="item.title" /></li>
-          </var:if
-        ></var:foreach
-      ></ul>
-
-      <var:foreach list="levelledNodes" item="item"
-        ><var:if condition="item.hasChildren"
-          ><var:component
-            className="UIxMailFolderMenu"
-            var:menuId="item.folderMenuId"
-            var:parentMenu="item.serialAsString"
-            rootClassName="treeRootClassName" 
-            const:treeFolderAction="view" 
-            /></var:if
-      ></var:foreach>
-    </div>
-  </container>