fix(pytest): remove stray custom_section causing warning #26

Summary

Remove stray [custom_section] in pytest.ini that causes PytestConfigWarning on every test run

Description

The pytest.ini file contains a stray [custom_section] with a value = test entry that is not recognized by pytest. This causes a PytestConfigWarning on every test run: "Unknown config option: value". While the tests still pass, this warning clutters the output and should be fixed by removing the unrecognized section.

Steps to Reproduce

1. Run any pytest command (e.g., pytest or make test)
2. Observe the warning in the output:

   PytestConfigWarning: Unknown config option: value
   

Expected Behavior

No configuration warnings should appear when running tests.

Actual Behavior

A PytestConfigWarning is displayed for every test run due to an unrecognized configuration option.

Additional Context

The problematic lines in pytest.ini are:

[custom_section]
value = test

Removing these lines will eliminate the warning without affecting test functionality, as the [custom_section] is not used by any part of the project.

This is a cleanup task that improves the developer experience by reducing noise in test output.