vim-patch:8.1.0430: Xargadd file left behind after running test

Problem:    Xargadd file left behind after running test.
Solution:   Delete the file. (Dominique Pelle)
d339828b4b

src/nvim/testdir/test_arglist.vim

@@ -74,6 +74,7 @@ func Test_argadd()
   call assert_equal(1, len(argv()))
   call assert_equal('some file', get(argv(), 0, ''))
 
+  call delete('Xargadd')
   %argd
   new
   arga