Remove unsed files.

* Removed the files which we are not using now or which only have PR change.
  This include linux-imx_3.0.35.bbappend abd its patches,
  gnome-disk-utility_2.32.0.bbappend and samba_3.6.8.bbappend.

Signed-off-by: Noor Ahsan <noor_ahsan@mentor.com>