mod_dialback: Remove d-w-d feature
Backs out 1d0862814bfc and 2fdd71b08126
Largely unused, undocumented and did not have enough tests to provide
confidence in its correct operation.
syntax: glob
.hgignore
.luacheckcache
data
local
www_files
html/*
prosody.lua
prosody.cfg.lua
prosody.version
config.unix
*.patch
*.diff
*.orig
*.rej
*.save
*~
*.o
*.so
*.install
*.pid
*.log
*.err
*.debug
*.dll
*.exp
*.lib
*.obj
luacov.report.out
luacov.report.out.index
luacov.stats.out