fixup CScriptNum decoding linting issues

Author: instagibbs

test/functional/test_framework/script.py

@@ -368,7 +368,7 @@ def __init__(self, d=0):
 
     @staticmethod
     def encode(obj):
-        val = obj.value;
+        val = obj.value
         r = bytearray(0)
         if val == 0:
             return bytes(r)
@@ -385,7 +385,7 @@ def encode(obj):
 
     @staticmethod
     def decode(vch):
-        push_size = vch[0] # We assume valid push_size and minimal encoding
+        # We assume valid push_size and minimal encoding
         value = vch[1:]
         # Mask for all but the highest result bit
         num_mask = (2**(len(value)*8) - 1) >> 1