Revert "AwesomeWM > rc.lua: Don't destroy tags after closing the last client until switching to another tag"

This reverts commit 43e2d14e64901ea56c97e1a0a4fb40ec75b44f6a.

Conflicts:
	.config/awesome/rc.lua
AwesomeWM > rc.lua: Don't destroy tag 9 when last client is closed