tools: mkenvimage: Drop duplicate crc header include

This header was already included just above version.h,
do not include it twice.

Fixes: 3db71108575 ("crc32: Use the crc.h header for crc functions")
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
1 file changed