Rework the code to have only the GvR RPC.  Output from execution of user
code is directed to the Shell.
diff --git a/Lib/idlelib/config.txt b/Lib/idlelib/config.txt
index 11adae1..b3f4ce9 100644
--- a/Lib/idlelib/config.txt
+++ b/Lib/idlelib/config.txt
@@ -51,9 +51,7 @@
 
 #[ZoomHeight]
 
-#[ScriptBinding]    # disabled in favor of ExecBinding
-
-[ExecBinding]
+[ScriptBinding]
 
 [CallTips]