Makefile: add /etc/bash_completion.d to non-bash purge
Currently, we delete /usr/share/bash-completion when bash is not enabled.
We need to delete /etc/bash_completion.d too. For example, the jo package
installs files there:
/etc/bash_completion.d/jo.bash
Signed-off-by: Danomi Manchego <danomimanchego123@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>