remove redundant ci tests

[kevinjqliu]

Apache Iceberg version

None

Please describe the bug 🐞

python-ci.yml and python-integration.yml are essentially testing the same things.

The former runs make test-coverage The latter runs make test-integration, which also runs integration tests

I think we can get rid of python-integration.yml

Willingness to contribute

• [ ] I can contribute a fix for this bug independently
• [ ] I would be willing to contribute a fix for this bug with guidance from the Iceberg community
• [ ] I cannot contribute a fix for this bug at this time

[FerminPaez]

Hi! How can I help you?