test: delete obsolete test-sendfd.js

This test was disabled in 2011 and is no longer useful without
modifications.

PR-URL: #14334
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Gibson Fahnestock <[email protected]>

Author: decareano