[autotest] Remove auto-adding of provision requirement from suite.

Now that we have all of the provision requirements specified as
suite-level dependencies, we don't need the suite to be adding it to the
tests themselves.

BUG=chromium:250586
TEST=Ran a suite, and saw that the DEPENDENCIES still show up from the
version_prefix.

Change-Id: I4945e2f5c160f921486f850b264b58c244ce62b6
Reviewed-on: https://chromium-review.googlesource.com/66606
Reviewed-by: Alexander Miller <milleral@chromium.org>
Tested-by: Alexander Miller <milleral@chromium.org>
Commit-Queue: Alexander Miller <milleral@chromium.org>
3 files changed