Remove unused global statements

Author: cverstege

kafe2/core/fitters/__init__.py

@@ -23,8 +23,6 @@
 
 
 def get_fitter(fitter_spec):
-    global AVAILABLE_FITTERS
-
     # for 'None', return the default fitter
     if fitter_spec is None:
         _fitter = AVAILABLE_FITTERS.get(kc["core"]["fitters"]["default_fitter"], None)

kafe2/core/minimizers/__init__.py

@@ -74,7 +74,6 @@ def get_minimizer(minimizer_spec=None):
     :type minimizer_spec: str or None
     :return: MinimizerBase-derived kafe2 minimizer object
     """
-    global AVAILABLE_MINIMIZERS
     # for 'None', return the default minimizer
     if minimizer_spec is None:
         # go through the default minimizers in the order specified in config