Replace LC CTE scalar integ tests by stateless tests

tests/integration/test_cte_lc/test.py

@@ -1,26 +0,0 @@
-import pytest
-from helpers.cluster import ClickHouseCluster
-
-cluster = ClickHouseCluster(__file__)
-node = cluster.add_instance("node")
-
-
-@pytest.fixture(scope="module", autouse=True)
-def start_cluster():
-    try:
-        cluster.start()
-        yield cluster
-    finally:
-        cluster.shutdown()
-
-
-def test_lc_of_string(start_cluster):
-    result = node.query("WITH (  SELECT toLowCardinality('a') ) AS bar SELECT bar")
-
-    assert result == "a\n"
-
-
-def test_lc_of_int(start_cluster):
-    result = node.query("WITH (  SELECT toLowCardinality(1) ) AS bar SELECT bar")
-
-    assert result == "1\n"

tests/queries/0_stateless/02375_scalar_lc_cte.reference

@@ -0,0 +1 @@
+a

tests/queries/0_stateless/02375_scalar_lc_cte.sql

@@ -0,0 +1 @@
+WITH ( SELECT toLowCardinality('a') ) AS bar SELECT bar