Remove unused IV calculation from evolve_pokemon (#3487)

Previously IV was computed in each worker. Now its fetched from inventory. This was left over and not called in the worker at all.

pokemongo_bot/cell_workers/evolve_pokemon.py

@@ -117,8 +117,3 @@ def _execute_pokemon_evolve(self, pokemon, cache):
             cache[pokemon.name] = 1
             sleep(0.7)
             return False
-
-    def _compute_iv(self, pokemon):
-        total_iv = pokemon.get("individual_attack", 0) + pokemon.get("individual_stamina", 0) + pokemon.get(
-            "individual_defense", 0)
-        return round((total_iv / 45.0), 2)