src: nw2: clean mac menu
src: nw2: clean mac menu

https://github.com/nwjs/chromium.src/commit/0088150360ef165f5dc8d44336e93ac637528cf8

nwjs/nw.js,nwjs/nw.js,nwjs/nw.js,nwjs/nw.js,nwjs/nw.js,nwjs/nw.js