Remove all definitions of raw_input() that were still scattered throughout the docs
from the time where there was neither input() nor raw_input().
diff --git a/Doc/library/traceback.rst b/Doc/library/traceback.rst
index 9b96743..ca8aea3 100644
--- a/Doc/library/traceback.rst
+++ b/Doc/library/traceback.rst
@@ -143,7 +143,7 @@
    import sys, traceback
 
    def run_user_code(envdir):
-       source = raw_input(">>> ")
+       source = input(">>> ")
        try:
            exec(source, envdir)
        except: