Remove the readline completion hook fallback used with Python < 2.6
Remove the readline completion hook fallback used with Python < 2.6

Signed-off-by: Christophe Vu-Brugier <1930e27f67e1e10d51770b88cb06d386f1aa46ae@yahoo.fr>

agrover/configshell-fb,cvubrugier/configshell-fb