tests/test-check-jshint.t

dagutil: remove descendantset() and ancestorset()

descendantset() is unused after the previous commit. And
ancestorset() was only used by descendantset(), so it can be removed
as well.

.. api:: descendantset() and ancestorset() removed from dagutil

   Use a revset instead when operating on the changelog. Or use
   various functionality in the ancestor or dagop modules.

Differential Revision: https://phab.mercurial-scm.org/D4315

#require test-repo jshint hg10

  $ . "$TESTDIR/helpers-testrepo.sh"

run jshint on all tracked files ending in .js except vendored dependencies

  $ cd "`dirname "$TESTDIR"`"

  $ testrepohg locate 'set:**.js' \
  > 2>/dev/null \
  > | xargs jshint