python-native: remove unused and duplicated sitecustomize.py

python-native doesn't use sitecustomize.py and there is another
duplicated one in meta/recipes-devtools/python/python.

(From OE-Core rev: 591d488bb4600daf586385311505083e9eb227d5)

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/python/python-native/sitecustomize.py

@@ -1,45 +0,0 @@
-# OpenEmbedded sitecustomize.py (C) 2002-2008 Michael 'Mickey' Lauer <mlauer@vanille-media.de>
-# GPLv2 or later
-# Version: 20081123
-# Features:
-# * set proper default encoding
-# * enable readline completion in the interactive interpreter
-# * load command line history on startup
-# * save command line history on exit 
-
-import os
-
-def __exithandler():
-    try:
-        readline.write_history_file( "%s/.python-history" % os.getenv( "HOME", "/tmp" ) )
-    except IOError:
-        pass
-
-def __registerExitHandler():
-    import atexit
-    atexit.register( __exithandler )
-
-def __enableReadlineSupport():
-    readline.set_history_length( 1000 )
-    readline.parse_and_bind( "tab: complete" )
-    try:
-        readline.read_history_file( "%s/.python-history" % os.getenv( "HOME", "/tmp" ) )
-    except IOError:
-        pass
-
-def __enableDefaultEncoding():
-    import sys
-    try:
-        sys.setdefaultencoding( "utf8" )
-    except LookupError:
-        pass
-
-import sys
-try:
-    import rlcompleter, readline
-except ImportError:
-    pass
-else:
-    __enableDefaultEncoding()
-    __registerExitHandler()
-    __enableReadlineSupport()