toolchain-external-arm-aarch64-be: fix check-package warning

Fixes:

toolchain/toolchain-external/toolchain-external-arm-aarch64-be/toolchain-external-arm-aarch64-be.mk:12: consecutive empty lines

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

toolchain/toolchain-external/toolchain-external-arm-aarch64-be/toolchain-external-arm-aarch64-be.mk

@@ -9,5 +9,4 @@ TOOLCHAIN_EXTERNAL_ARM_AARCH64_BE_SITE = https://developer.arm.com/-/media/Files
 
 TOOLCHAIN_EXTERNAL_ARM_AARCH64_BE_SOURCE = gcc-arm-8.2-$(TOOLCHAIN_EXTERNAL_ARM_AARCH64_BE_VERSION)-x86_64-aarch64_be-linux-gnu.tar.xz
 
-
 $(eval $(toolchain-external-package))