call site 3 for path.svnwc.remove
path/svn/testing/test_wccommand.py - line 180
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   def test_nonversioned_remove(self):
       assert self.root.check(versioned=1)
       somefile = self.root.join('nonversioned/somefile')
       nonwc = py.path.local(somefile)
       nonwc.ensure()
       assert somefile.check()
       assert not somefile.check(versioned=True)
->     somefile.remove() # this used to fail because it tried to 'svn rm'