cros_generate_update_payload: Get rid of the --patch_kernel option.

The kernel will have the right vblock on it by default, so patching the vblock
is basically a no-op. All call sites have been modified not to use that option,
so it should be safe to remove.

CQ-DEPEND=CL:213988
CQ-DEPEND=CL:216573
CQ-DEPEND=CL:216579
BUG=chromium:403031
TEST=Ran a butterfly-paladin tryjob with --hwtest.

Change-Id: Ide1f6de837004691b2f7e571172791cdfd3b9b2f
Reviewed-on: https://chromium-review.googlesource.com/216612
Reviewed-by: Yu-Ju Hong <[email protected]>
Tested-by: Gabe Black <[email protected]>
Commit-Queue: Gabe Black <[email protected]>
1 file changed