reset_index() not functioning properly with more than two indexes

[roumenv]

Describe the bug
When a pandera DataFrameSchema has an index with more than two levels, the reset_index method does not appear to work as expected. For example, the ability to drop a particular index using the method results in no index change.

• I have checked that this issue has not already been reported.
• I have confirmed this bug exists on the latest version of pandera.
• (optional) I have confirmed this bug exists on the main branch of pandera.

Note: Please read this guide detailing how to provide the necessary information for us to reproduce your bug.

Code Sample, a copy-pastable example

import pandera as pa
example_schema = pa.DataFrameSchema({
    "category" : pa.Column(str)},
    index = pa.MultiIndex([
        pa.Index(name="unique_id1", dtype=int),
        pa.Index(name="unique_id2", dtype=str),
        pa.Index(name="unique_id3", dtype=float)
        ]
    )
)

print(example_schema.reset_index(level = ["unique_id1"], drop=True).index)

Expected behavior

In the example above, I would expected the modified schema to have an index with two levels unique_id2 and unique_id3 as it does when we try to drop an index level from a index with two levels.

Desktop (please complete the following information):

• OS: macOS Sonoma 14.6.1
• Version: pandera 20.2

Screenshots

Additional context