Refactor chromium code

chromium.py

@@ -1,28 +1,22 @@
 import json
 
 prefs_file = '/home/pi/.config/chromium/Default/Preferences'
-master_prefs_file = '/usr/lib/chromium-browser/master_preferences'
+global_prefs_file = '/usr/lib/chromium-browser/master_preferences'
 prefs = {}
 
 try:
     with open(prefs_file, 'r') as f:
-        location = "local"
         prefs = json.load(f)
 except FileNotFoundError:
-    #print("Chromium settings not found - please launch Chromium once before running this script")
-    print("User Chromium settings not found - Modifying master settings")
-    with open(master_prefs_file, 'r') as f:
+    prefs_file = global_prefs_file
+    with open(prefs_file, 'r') as f:
         prefs = json.load(f)
-        location = "master"
 
 if prefs:
     prefs['session'] = {
         'restore_on_startup': 4,
         'startup_urls': ['http://rpf.io/ap-msl-guide']
     }
-if location == "master":
-    with open(master_prefs_file, 'w') as f:
-        json.dump(prefs,f)
-elif location == "local":
-    with open(prefs_file, 'w') as f:
-        json.dump(prefs,f)
+
+with open(prefs_file, 'w') as f:
+    json.dump(prefs, f)