Do not install the idle editor

IDLE is the Python IDE built with the tkinter GUI toolkit. Since it's
highly unlikely to ever be useful in an embedded Linux system
generated by Buildroot, this patch simply disables the installation of
idle and the related Python modules. It saves 800 KB-900 KB of
installed .pyc files.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

Index: b/Makefile.pre.in
===================================================================
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -934,7 +934,6 @@
 		json \
 		logging csv importlib wsgiref \
 		ctypes ctypes/macholib \
-		idlelib idlelib/Icons \
 		distutils distutils/command \
 		multiprocessing multiprocessing/dummy \
 		unittest \
@@ -949,7 +948,6 @@
 	email/test email/test/data \
 	json/tests \
 	ctypes/test \
-	idlelib/idle_test \
 	distutils/tests \
 	unittest/test
 
Index: b/setup.py
===================================================================
--- a/setup.py
+++ b/setup.py
@@ -2220,7 +2220,7 @@
     import warnings
     warnings.filterwarnings("ignore",category=DeprecationWarning)
 
-    scripts = ['Tools/scripts/idle', 'Lib/smtpd.py']
+    scripts = ['Lib/smtpd.py']
     if not '--disable-pydoc' in sysconfig.get_config_var("CONFIG_ARGS"):
         scripts += [ 'Tools/scripts/pydoc' ]
     if not '--disable-lib2to3' in sysconfig.get_config_var("CONFIG_ARGS"):