Remove override of Bazel built-in attribute
Remove override of Bazel built-in attribute

Summary: Orignally, we added the `args` attribute to the Go rules in June.  Bazel added the `args` attribute to all Skylark rules soon after in commit 70265eca3b2a12ef (Aug 31).  Now the Bazel commit e96b0b88a5f9aa8 (Sep 25) makes our copy an error.

Reviewers: zarko, shahms, fromberger

Reviewed By: fromberger

Differential Revision: https://phabricator-dot-kythe-repo.appspot.com/D525

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