Fix redundant TAB display for BASH_TAB in PshellReadline.py
Fix redundant TAB display for BASH_TAB in PshellReadline.py

RonIovine/pshell,RonIovine/pshell,RonIovine/pshell,RonIovine/pshell,RonIovine/pshell,RonIovine/pshell