Hallmark caves to One Million Moms and pulls gay-themed ads.

This image made from undated video provided by Zola shows a scene of its advertisement. (Zola via AP)

Under pressure from a conservative advocacy group, The Hallmark Channel has pulled ads for a wedding-planning website that featured two brides kissing at the altar.

The family-friendly network, which is in the midst of its heavily watched holiday programming, removed the…