ENH: Fix socket channel config bug

[luweizheng]

In the last PR, we added a parse_config method in socket channel. This method is mainly for extracting listen_elastic_ip in extra_conf.
However, when xorbits calls it, this config contains keyword arguments like ucx in extra_conf.
The config will further affect the following code as asyncio.start_server does not have the ucx keyword argument.

aio_server = await asyncio.start_server(
            handle_connection, host=_host, port=port, **config
        )

In xorbits, this config contains stuff about ucx like: {'ucx': {'tcp': None, 'nvlink': None, 'infiniband': None, 'rdmacm': None, 'cuda-copy': None, 'create-cuda-contex': None}}. This config is from python/xorbits/_mars/deploy/oscar/base_config.yml.

However, SocketChannel does not use the ucx config. So we do not need it here.

Check code requirements

• tests added / passed (if needed)
• Ensure all linting tests pass

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.09%. Comparing base (d6465c9) to head (a93e1e5).
Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #100      +/-   ##
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- Coverage   88.97%   85.09%   -3.89%     
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  Files          48       54       +6     
  Lines        4038     4556     +518     
  Branches      770      833      +63     
==========================================
+ Hits         3593     3877     +284     
- Misses        358      586     +228     
- Partials       87       93       +6     

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unittests	84.92% <ø> (-3.89%)	⬇️

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[qinxuye]

LGTM