Update itembuilder.md

Author: ThePansmith

docs/events/startup/registry/itembuilder.md

@@ -78,12 +78,6 @@ StartupEvents.registry('item', event => {
     - `attackDamageBonus(damage: float)` - Adds a bonus to the attack damage.
     - `speedBaseline(speed: float)` - Sets the baseline attack speed. Only modify this for custom weapon types.
     - `speed(speed: float)` - Sets the attack speed.
-    tier(toolTier)
-    modifyTier(tier => ...) Same syntax as custom tool tier, see Custom Tiers
-    attackDamageBaseline(damage) You only want to modify this if you are creating a custom weapon such as Spear, Battleaxe, etc.
-    attackDamageBonus(damage)
-    speedBaseline(speed) Same as attackDamageBaseline, only modify for custom weapon types
-    speed(speed)
 
 #### Food Properties