vboot: remove static linking support from Makefile

Previously, futility and crossystem needed to be statically
linked.  (futility had both futility and futility_s.)

Since there's no longer any need to statically link any binaries
built by vboot_reference, remove this support from the Makefile.

BUG=b:124141368, chromium:765499
TEST=make clean && make runtests
BRANCH=none

Change-Id: I8c2b5c5b5aa86bbecb0c264f688dfdac4b19ca7e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/1954976
Tested-by: Joel Kitching <kitching@chromium.org>
Commit-Queue: Joel Kitching <kitching@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
1 file changed