Do not copy tryton data and plugins in frozen build

Since d94c92c1de67 the library is no more compressed so those package data are
already in the usual place.
(grafted from 867d962ffbe4657643961554fefc952eb007d9f7)

--HG--
branch : 7.0

tryton/setup-freeze.py

@@ -23,8 +23,6 @@ except IOError:
 
 
 include_files = [
-    (os.path.join('tryton', 'data'), 'data'),
-    (os.path.join('tryton', 'plugins'), 'plugins'),
     (os.path.join(sys.prefix, 'share', 'glib-2.0', 'schemas'),
         os.path.join('share', 'glib-2.0', 'schemas')),
     (os.path.join(sys.prefix, 'lib', 'gtk-3.0'),

tryton/tryton/config.py

@@ -219,8 +219,6 @@ class ConfigManager(object):
 
 CONFIG = ConfigManager()
 CURRENT_DIR = os.path.dirname(__file__)
-if hasattr(sys, 'frozen'):
-    CURRENT_DIR = os.path.dirname(sys.executable)
 if not isinstance(CURRENT_DIR, str):
     CURRENT_DIR = str(CURRENT_DIR, sys.getfilesystemencoding())