Be compatible with outside metaclasses, for now

Making this change would allow use of metaclasses in a more straightforward way for code that inherits from both SimPEG classes and external classes. In the future, this may need to be addressed in more detail.

SimPEG/Utils/codeutils.py

@@ -3,10 +3,7 @@ import time
 import numpy as np
 from functools import wraps
 
-
-class SimPEGMetaClass(type):
-    def __new__(cls, name, bases, attrs):
-        return super(SimPEGMetaClass, cls).__new__(cls, name, bases, attrs)
+SimPEGMetaClass = type
 
 def memProfileWrapper(towrap, *funNames):
     """