[oe] Strange bluez dependency for ppp

[Petr Štetiar]

Hi,

I've added ppp to my image based on minimal-image. To my surprise it dragged
in over 2000 more packages. It's caused by libpcap which depends on
bluez-libs. My minimal-image with ppp = 3541 tasks/packages and same
minimal-image with ppp, but with removed bluez-utils dependency from libcap =
1300 tasks/packages. I wonder how to fix it correctly in OE, since I've found
this patch[1]. Thanks for the suggestions.

1. http://patchwork.openembedded.org/patch/329/

-- ynezz