TST: remove checking is python >= 3.4 (#1446)

Signed-off-by: Tomasz Kłoczko <[email protected]>

Author: kloczek

test/test_proj.py

@@ -1,7 +1,6 @@
 import concurrent.futures
 import math
 import os
-import sys
 import unittest
 from unittest.mock import patch
 
@@ -159,9 +158,6 @@ def test_latlong_typeerror(self):
             lon, lat = transform(p, p.to_latlong(), 200000, 400000)
 
 
-@unittest.skipIf(
-    sys.version_info < (3, 4), "Python 3.4 or newer required for subTest()"
-)
 class ForwardInverseTest(unittest.TestCase):
     def test_fwd_inv(self):
         for pj in pj_list.keys():