The deck works without Skullclamp.
It heavily relies on Fecundity, and thus is highly sensible to Disenchant-like spells. It can still work as a Goblin aggro deck, though it is way less aggressive without the green enchantment.

// Lands
4 Forest
12 Mountain

// Creatures
1 Goblin Warchief
1 Goblin Recruiter
1 Goblin Sledder
1 Mogg Raider
3 Wild Cantor
4 Goblin Matron
4 Mogg Fanatic
4 Mogg War Marshal
4 Skirk Prospector

// Other spells
4 Chromatic Star
4 Lotus Petal
3 Fecundity (or SkullClamp if you're allowed to)
1 Brightstone Ritual
1 Desperate Ritual
4 Empty the Warrens
4 Rite of Flame

// Sideboard :
1 Grapeshot
4 Tragic Poet (or Reconstruction if you're playing SkullClamp)
4 Akki Blizzard-Herder
4 Tin Street Hooligan
2 Desperate Ritual