Remove unused api/python/setup.txt (#1775)
Remove unused api/python/setup.txt (#1775)

It seems unused since its introduction in
2744c1273438dfdbcef7ed20a4944b3b1bbbd382.
quiltdata/quilt,quiltdata/quilt,quiltdata/quilt-compiler,quiltdata/quilt-compiler,quiltdata/quilt-compiler,quiltdata/quilt,quiltdata/quilt,quiltdata/quilt-compiler,quiltdata/quilt