[MINOR][TESTS][CONNECT] Fix the teardown function of test_connect_function.py

### What changes were proposed in this pull request?
It is a small fix to a typo in teardown function of a test where instead of calling teardown of the parent object we are calling setup.

### Why are the changes needed?
This typo needs to be fixed

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?
This is already covered by the changed test.

### Was this patch authored or co-authored using generative AI tooling?
No

Closes apache#50120 from sfc-gh-dyadav/patch-1.

Authored-by: Deepak Yadav <[email protected]>
Signed-off-by: Hyukjin Kwon <[email protected]>

Author: sfc-gh-dyadav

python/pyspark/sql/tests/connect/test_connect_function.py

@@ -61,7 +61,7 @@ def setUpClass(cls):
     @classmethod
     def tearDownClass(cls):
         cls.spark = cls.connect  # Stopping Spark Connect closes the session in JVM at the server.
-        super(SparkConnectFunctionTests, cls).setUpClass()
+        super(SparkConnectFunctionTests, cls).tearDownClass()
         del os.environ["PYSPARK_NO_NAMESPACE_SHARE"]
 
     def compare_by_show(self, df1, df2, n: int = 20, truncate: int = 20):