lib/Ext/viewport/Default.js
function(side) {
        var menus = this.getMenus() || {},
            menu = menus[side];

        if(menu) this.hideMenu(side);
        delete menus[side];
        this.setMenus(menus);
    }
function(side) {
        var menus = this.getMenus() || {},
            menu = menus[side];

        if(menu) this.hideMenu(side);
        delete menus[side];
        this.setMenus(menus);
    }
Removes a menu from a specified side.
@param {String} side The side to remove the menu from