Remove unused variable gmt_version from three tests (#1766)

Author: seisman

pygmt/tests/test_grdtrack.py

@@ -6,18 +6,14 @@
 import numpy.testing as npt
 import pandas as pd
 import pytest
-from packaging.version import Version
-from pygmt import clib, grdtrack, which
+from pygmt import grdtrack, which
 from pygmt.datasets import load_earth_relief, load_ocean_ridge_points
 from pygmt.exceptions import GMTInvalidInput
 from pygmt.helpers import data_kind
 
 TEST_DATA_DIR = os.path.join(os.path.dirname(__file__), "data")
 TEMP_TRACK = os.path.join(TEST_DATA_DIR, "tmp_track.txt")
 
-with clib.Session() as _lib:
-    gmt_version = Version(_lib.info["version"])
-
 
 @pytest.fixture(scope="module", name="dataarray")
 def fixture_dataarray():

pygmt/tests/test_plot.py

@@ -9,17 +9,13 @@
 import pandas as pd
 import pytest
 import xarray as xr
-from packaging.version import Version
-from pygmt import Figure, clib
+from pygmt import Figure
 from pygmt.exceptions import GMTInvalidInput
 from pygmt.helpers import GMTTempFile
 
 TEST_DATA_DIR = os.path.join(os.path.dirname(__file__), "data")
 POINTS_DATA = os.path.join(TEST_DATA_DIR, "points.txt")
 
-with clib.Session() as _lib:
-    gmt_version = Version(_lib.info["version"])
-
 
 @pytest.fixture(scope="module")
 def data():

pygmt/tests/test_velo.py

@@ -3,13 +3,9 @@
 """
 import pandas as pd
 import pytest
-from packaging.version import Version
-from pygmt import Figure, clib
+from pygmt import Figure
 from pygmt.exceptions import GMTInvalidInput
 
-with clib.Session() as _lib:
-    gmt_version = Version(_lib.info["version"])
-
 
 @pytest.fixture(scope="module", name="dataframe")
 def fixture_dataframe():