Drop unneeded LIC_FILES_CHKSUM values

With the changes to insane.bbclass we don't need LIC_FILES_CHKSUM to be
set for recipes that don't actually pull in any source.

(From OE-Core rev: fc14e794c53f94158a5e6d6a8644656875639d0c)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/core-image.bbclass

@@ -2,9 +2,6 @@
 #
 # Copyright (C) 2007-2011 Linux Foundation
 
-LIC_FILES_CHKSUM = "file://${COREBASE}/LICENSE;md5=4d92cd373abda3937c2bc47fbc49d690 \
-                    file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
-
 # IMAGE_FEATURES control content of the core reference images
 # 
 # By default we install packagegroup-core-boot and packagegroup-base-extended packages;

meta/classes/packagegroup.bbclass

@@ -15,9 +15,6 @@ PACKAGE_ARCH ?= "all"
 PACKAGE_ARCH_EXPANDED := "${PACKAGE_ARCH}"
 
 LICENSE ?= "MIT"
-LIC_FILES_CHKSUM ?= "${@oe.utils.ifelse(d.getVar('LICENSE', True) == 'MIT', \
-                     'file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420', \
-                    '')}"
 
 inherit ${@oe.utils.ifelse(d.getVar('PACKAGE_ARCH_EXPANDED', True) == 'all', 'allarch', '')}