Makefile.mk: Remove bc dependency

bc was added as dependency in commit 229e021110 ("Makefile.inc: Add left shift macro")

bc is not stated as dependency in our docs (e.g. package installation).
If you don't have bc installed you can easily get false positives on
coreboot builds. For example you build a mainboard and coreboot tells
you the build succeeded, even though you don't have bc installed.

This patch is from julius comment on CB:21601.

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I6ab4bc2bd7a45e84b923d4fe7ec473e6c7db2146
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83313
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>

0 files changed, 0 insertions, 0 deletions