Set map_variables=False in tests

Author: AdamRJensen

tests/iotools/test_psm4.py

@@ -92,7 +92,7 @@ def test_get_nsrdb_psm4_polar(nlr_api_key):
         parameters=["ghi"],
         utc=True,
         map_variables=False)
-    expected, _ = psm4.read_nsrdb_psm4(POLAR_TEST_DATA)
+    expected, _ = psm4.read_nsrdb_psm4(POLAR_TEST_DATA, map_variables=False)
     pd.testing.assert_frame_equal(data, expected)