Remove evm redundant parentheses

mythril/ether/evm.py

@@ -52,7 +52,7 @@ def trace(code, calldata=""):
 
                 stack = "[";
 
-                if (len(stackitems)):
+                if len(stackitems):
 
                     for i in range(0, len(stackitems) - 1):
                         stack += hex(int(stackitems[i])) + ", "
@@ -64,7 +64,7 @@ def trace(code, calldata=""):
             else:
                 stack = "[]"
 
-            if (re.match(r'^PUSH.*', op)):
+            if re.match(r'^PUSH.*', op):
                 val = re.search(r'pushvalue=(\d+)', line).group(1)
                 pushvalue = hex(int(val))
                 trace.append({'pc': pc, 'op': op, 'stack': stack, 'pushvalue': pushvalue})