Add missing 'sys.' and remove unused module import.

src/Ophis/Macro.py

@@ -11,7 +11,6 @@
 import sys
 
 import Ophis.IR as IR
-import Ophis.CmdLine as Cmd
 import Ophis.Errors as Err
 
 macros = {}

src/tools/opcodes/gensets.py

@@ -142,7 +142,7 @@ def dump_map(m, prologue=''):
 
 if __name__ == '__main__':
     if len(sys.argv) > 1:
-        chipsets = argv[1:]
+        chipsets = sys.argv[1:]
     else:
         chipsets = ['chipsets.txt']
     archs = []