Make simplifications after dropping python3.6

Signed-off-by: Martin Vrachev <mvrachev@vmware.com>

tests/test_hash.py

@@ -45,9 +45,6 @@ def _is_supported_combination(library, algorithm):
     if algorithm in blake_algos:
       if library == 'pyca_crypto':
         return False
-      # hashlib does not support blake2* if < 3.6
-      elif library == 'hashlib' and sys.version_info[:2] < (3, 6):
-        return False
     return True
 
 

tests/test_signer.py

@@ -9,18 +9,7 @@
 import securesystemslib.formats
 import securesystemslib.keys as KEYS
 from securesystemslib.exceptions import FormatError, UnsupportedAlgorithmError
-
-# TODO: Remove case handling when fully dropping support for versions < 3.6
-IS_PY_VERSION_SUPPORTED = sys.version_info >= (3, 6)
-
-# Use setUpModule to tell unittest runner to skip this test module gracefully.
-def setUpModule():
-    if not IS_PY_VERSION_SUPPORTED:
-        raise unittest.SkipTest("requires Python 3.6 or higher")
-
-# Since setUpModule is called after imports we need to import conditionally.
-if IS_PY_VERSION_SUPPORTED:
-    from securesystemslib.signer import Signature, SSlibSigner
+from securesystemslib.signer import Signature, SSlibSigner
 
 
 class TestSSlibSigner(unittest.TestCase):