Remove hw_tests from Paladin targets for now.
Remove hw_tests from Paladin targets for now.

When fire and forgetting builds we end up with a large stack
of jobs that will not complete for a number of reasons. This also does
not model the behavior of the step, in general, since we would typically
block on the run_suite call. I am going to disable this here for now and
come up with a better way to launch these jobs out of band.

BUG=NONE
TEST=Unittests

Change-Id: I8817f1582ea1aa75ac2871e48b0b6087e61311a8
Reviewed-on: https://gerrit.chromium.org/gerrit/26530
Commit-Ready: Scott Zawalski <d0bc454f32175e2361d26fbdb5930ff6be11acc5@chromium.org>
Reviewed-by: Scott Zawalski <d0bc454f32175e2361d26fbdb5930ff6be11acc5@chromium.org>
Tested-by: Scott Zawalski <d0bc454f32175e2361d26fbdb5930ff6be11acc5@chromium.org>

chadversary/chromiumos.chromite,coreos/chromite,zhang0137/chromite,coreos/chromite,bpsinc-native/src_third_party_chromite,chadversary/chromiumos.chromite,zhang0137/chromite,bpsinc-native/src_third_party_chromite,coreos/chromite,bpsinc-native/src_third_party_chromite,zhang0137/chromite