[autotest] Quit mangling board names with a '-' in them.

This deletes legacy code from CrosHost.get_board() that stripped off
any suffix text from a board name after the first (or sometimes
second) '-' character.  The code had outlived its purpose, and was
breaking names like amd64-generic and veyron_minnie-cheets.

BUG=chromium:570088
TEST=In a local instance, run `atest host create` for a veyron_minnie-cheets DUT

Change-Id: I1bb9ab703d0b373d078796a6bfa16ec58f2cf725
Reviewed-on: https://chromium-review.googlesource.com/326440
Reviewed-by: Dan Shi <dshi@google.com>
Reviewed-by: Olof Johansson <olofj@chromium.org>
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Tested-by: Gwendal Grignou <gwendal@chromium.org>
Commit-Queue: Richard Barnette <jrbarnette@chromium.org>
1 file changed