Update README.md: remove splash image, & broken code coverage links

Author: trentmc

README.md

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 SPDX-License-Identifier: Apache-2.0
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 > ocean.py: a Python library to privately & securely publish, exchange, and consume data.
 
 ⚠ Note: as of early 2025, this codebase is not being maintained. It might work, it might not. If you find a bug, feel free to report it, but do not expect it to be fixed. 
 
-[![Maintainability](https://api.codeclimate.com/v1/badges/a0be65f412a35440c63e/maintainability)](https://codeclimate.com/github/oceanprotocol/ocean.py/maintainability)
-[![Test Coverage](https://api.codeclimate.com/v1/badges/a0be65f412a35440c63e/test_coverage)](https://codeclimate.com/github/oceanprotocol/ocean.py/test_coverage)
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 Ocean.py helps data scientists earn $ from their AI models, track provenance of data & compute, and get more data. (More details [here](https://docs.oceanprotocol.com/data-science).)
 
 Ocean.py makes these tasks easy: