Remove include of astobj.h from channels/dahdi/bridge_native_dahdi.c.

The include was unneeded, this is split off from r3758 as it applies to 12.


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/12@418787 f38db490-d61c-443f-a65b-d21fe96a405b