core/linux-imx6-wandboard-dt remove static noise fix

With xbmc-imx6/xbmc#59 and xbmc-imx6/xbmc#58 merged, the underlying audio issue is fixed and the patch is no longer required.

This removes said patch and updates xbmc to the newest commit.

I read the contributing guidelines, if I should split up those changes in two commits/pull requests, just say the word.

Edit: Changed issue xbmc-imx6/xbmc#60 to xbmc-imx6/xbmc#58, 60 had nothing to do with this.