This very lightweight plugin let players teleport to others, teleport here and teleport to a position without a message, so you can teleport players silently.
/silentteleport <player> Teleports to a player
/silentteleportposition <X> <Y> <Z> Teleports to given Coordinates
/silentteleporthere <player> Teleports a player to you
stp.stp permission to teleport to a player
stp.stppos permission to teleport to coordinates
stp.stphere permission to teleport a player to you