Jennifer Maas TV Business Writer“Charmed,” “Dynasty,” “Roswell, New Mexico” and “In the Dark” have been canceled at The CW, Variety has learned.Both “Roswell, New Mexico” and “In the Dark” have already completed filming on their upcoming seasons, and will conclude after those episodes have aired.Also canceled Thursday by the younger-skewing broadcast network were “Naomi” and “4400.”Based on the original WB/CW series of the same name, “Charmed” was currently airing its fourth season. The reboot starred Melonie Diaz, Sarah Jeffery, Lucy Barrett, Rupert Evans and Jordan Donica.