fixed bug in tests and removed unused imports

osaca/semantics/hw_model.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 
-import base64
 import os
 import pickle
 import re

osaca/utils.py

@@ -1,10 +1,7 @@
 #!/usr/bin/env python3
 import os.path
-from pathlib import Path
-import hashlib
 
-DATA_DIRS = [os.path.expanduser('~/.osaca/data'),
-             os.path.join(os.path.dirname(__file__), 'data')]
+DATA_DIRS = [os.path.expanduser('~/.osaca/data'), os.path.join(os.path.dirname(__file__), 'data')]
 CACHE_DIR = os.path.expanduser('~/.osaca/cache')
 
 

tests/test_frontend.py

@@ -33,7 +33,7 @@ class TestFrontend(unittest.TestCase):
             path_to_yaml=os.path.join(self.MODULE_DATA_DIR, 'csx.yml')
         )
         self.machine_model_tx2 = MachineModel(
-            arch='tx2.yml'
+            arch='tx2'
         )
         self.semantics_csx = ArchSemantics(
             self.machine_model_csx, path_to_yaml=os.path.join(self.MODULE_DATA_DIR, 'isa/x86.yml')