[SPARK-41864][INFRA][PYTHON] Fix mypy linter errors

Currently, the GitHub Action Python linter job is broken. This PR will recover Python linter failure.

There are two kind of failures.
1. https://github.com/apache/spark/actions/runs/3829330032/jobs/6524170799
```
python/pyspark/pandas/sql_processor.py:221: error: unused "type: ignore" comment
Found 1 error in 1 file (checked 380 source files)
```

2. After fixing (1), we hit the following.
```
ModuleNotFoundError: No module named 'py._path'; 'py' is not a package
```

No.

Pass the GitHub CI on this PR. Or, manually run the following.
```
$ dev/lint-python
starting python compilation test...
python compilation succeeded.

starting black test...
black checks passed.

starting flake8 test...
flake8 checks passed.

starting mypy annotations test...
annotations passed mypy checks.

starting mypy examples test...
examples passed mypy checks.

starting mypy data test...
annotations passed data checks.

all lint-python tests passed!
```

Closes #39373 from dongjoon-hyun/SPARK-41864.

Authored-by: Dongjoon Hyun <dongjoon@apache.org>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>
(cherry picked from commit 13b2856)
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>

Author: dongjoon-hyun

dev/requirements.txt

@@ -43,3 +43,4 @@ PyGithub
 
 # pandas API on Spark Code formatter.
 black
+py

python/pyspark/pandas/sql_processor.py

@@ -218,7 +218,7 @@ def _get_ipython_scope() -> Dict[str, Any]:
     in an IPython notebook environment.
     """
     try:
-        from IPython import get_ipython  # type: ignore[import]
+        from IPython import get_ipython
 
         shell = get_ipython()
         return shell.user_ns