cgpt: Remove unnecessary 512-byte sector check and minimum lba count checks.

This was an oversight from a previous CL:1007498 that removed the 512 block
size restrictions.

BUG=b:77540192
BRANCH=none
TEST=manual
make runtests passed.

Change-Id: I75b3ffebcc25afdde3774bcbb4a9600215a04436
Reviewed-on: https://chromium-review.googlesource.com/1031193
Commit-Ready: Sam Hurst <shurst@google.com>
Tested-by: Sam Hurst <shurst@google.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2 files changed