Revert "Call backward-kill-word instead of unix-word-rubout when C-w has been pressed."
Revert "Call backward-kill-word instead of unix-word-rubout when C-w has been pressed."

This reverts commit 7ea3f44d6c5681eeef3bbf1fb4518f733e817ee5.

We shouldn't have done this. See: https://github.com/jonathanslenders/python-prompt-toolkit/issues/426

jonathanslenders/python-prompt-toolkit