python3Packages.fsspec: fix tests on darwin

Disables the `test_touch` test which fails with the following assertion error on hydra darwin only:
```
tmpdir = local('/private/tmp/nix-build-python3.8-fsspec-0.8.3.drv-0/pytest-of-nixbld3/pytest-0/test_touch0')

    def test_touch(tmpdir):
        import time

        fn = tmpdir + "/in/file"
        fs = fsspec.filesystem("file", auto_mkdir=False)
        with pytest.raises(OSError):
            fs.touch(fn)
        fs = fsspec.filesystem("file", auto_mkdir=True)
        fs.touch(fn)
        info = fs.info(fn)
        time.sleep(0.2)
        fs.touch(fn)
        info2 = fs.info(fn)
        if not WIN:
>           assert info2["mtime"] > info["mtime"]
E           assert 1601358357.0 > 1601358357.0

fsspec/implementations/tests/test_local.py:322: AssertionError
```

0 files changed, 0 insertions, 0 deletions