Dropping dummy try slave names on nacl tryserver.
Dropping dummy try slave names on nacl tryserver.

Historically try masters had dummy slaves to allow attaching extra experimental
slaves. This is not longer require and the chromium tryserver has long since
dropped this. Dropping for the nacl tryserver too.

BUG=None
TEST=local
TBR=hinoka@chromium.org

Review URL: https://codereview.chromium.org/297803012

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@272105 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build