Remove the DISABLE_JULIA option.

This was only introduced very recently, so probably nobody is using it.
After the changes on this branch, using it only causes an Exception 
anyway, so it's not a useful feature - it's one that just causes a crash!
So I'm removing the feature.
We now only load Julia if we really need it, so disabling it is not 
ever beneficial.

Author: rwest

rmgpy/__init__.py

@@ -154,10 +154,6 @@ def reset(self):
 # The global settings object
 settings = Settings(path=None)
 
-# Global flag to disable Julia imports (useful for scripts that don't need RMS)
-DISABLE_JULIA = False
-
-
 ################################################################################
 
 

rmgpy/pdep/sls.py

@@ -53,11 +53,6 @@ class LazyMain:
     # If you modify this class, please consider making similar changes to
     # rmgpy/rmg/reactionmechanismsimulator_reactors.py, which has a similar LazyMain class
     def __getattr__(self, name):
-        if getattr(rmgpy, 'DISABLE_JULIA', False):
-            raise ImportError("Julia imports disabled via rmgpy.DISABLE_JULIA flag")
-        elif len(os.environ.get('RMG_DISABLE_JULIA', '')) > 0:
-            raise ImportError("Julia imports disabled via RMG_DISABLE_JULIA "
-                              "environment variable. Unset it to enable Julia imports.")
         try:
             from juliacall import Main as JuliaMain
             Main = JuliaMain

rmgpy/rmg/reactionmechanismsimulator_reactors.py

@@ -69,11 +69,6 @@ class LazyMain:
     # If you modify this class, please consider making similar changes to
     # rmgpy/pdep/sls.py, which has a similar LazyMain class.
     def __getattr__(self, name):
-        if getattr(rmgpy, 'DISABLE_JULIA', False):
-            raise ImportError("Julia imports disabled via rmgpy.DISABLE_JULIA flag")
-        elif len(os.environ.get('RMG_DISABLE_JULIA', '')) > 0:
-            raise ImportError("Julia imports disabled via RMG_DISABLE_JULIA "
-                              "environment variable. Unset it to enable Julia imports.")
         try:
             from juliacall import Main as JuliaMain
             Main = JuliaMain

rmgpy/tools/regression.py

@@ -37,9 +37,6 @@
 import os.path
 import sys
 
-import rmgpy
-rmgpy.DISABLE_JULIA = True  # disable Julia to save time and warnings
-
 from rmgpy.molecule import Molecule
 from rmgpy.quantity import Quantity
 from rmgpy.species import Species

scripts/checkModels.py

@@ -32,10 +32,6 @@
 import math
 import sys
 
-# Disable Julia imports for checkModels.py since they're not needed
-import rmgpy
-rmgpy.DISABLE_JULIA = True
-
 from rmgpy.tools.diffmodels import execute
 
 logger = logging.getLogger('checkModels')