Revert "Add test code to overwrite SQL in Beam Python JDBC (#30417)" (#…

…30535)

This reverts commit 2b8a737.

sdks/python/apache_beam/io/external/xlang_jdbcio_it_test.py

@@ -29,8 +29,6 @@
 from parameterized import parameterized
 
 import apache_beam as beam
-from apache_beam import DoFn
-from apache_beam import ParDo
 from apache_beam import coders
 from apache_beam.io.jdbc import ReadFromJdbc
 from apache_beam.io.jdbc import WriteToJdbc
@@ -199,6 +197,8 @@ def test_xlang_jdbc_write_read(self, database):
       p.not_use_test_runner_api = True
       result = (
           p
+          # TODO(https://github.com/apache/beam/issues/20446) Add test with
+          # overridden read_query
           | 'Read from jdbc' >> ReadFromJdbc(
               table_name=table_name,
               driver_class_name=self.driver_class_name,
@@ -209,26 +209,6 @@ def test_xlang_jdbc_write_read(self, database):
 
       assert_that(result, equal_to(expected_row))
 
-    with TestPipeline() as p:
-      p.not_use_test_runner_api = True
-
-      class ExtractCount(DoFn):
-        def process(self, element):
-          yield element[0]
-
-      result = (
-          p
-          | 'Read from jdbc override query' >> ReadFromJdbc(
-              table_name=table_name,
-              query=f'select count(*) from {table_name}',
-              driver_class_name=self.driver_class_name,
-              jdbc_url=self.jdbc_url,
-              username=self.username,
-              password=self.password,
-              classpath=classpath)
-          | 'ExtractCount' >> ParDo(ExtractCount()))
-      assert_that(result, equal_to([ROW_COUNT]))
-
     # Try the same read using the partitioned reader code path.
     # Outputs should be the same.
     with TestPipeline() as p: