fix(tip): remove coffee tier labels

src/lib/tip/tip_coffee.ts

@@ -7,7 +7,6 @@ export type TipCoffeeType = "small" | "medium" | "large";
 
 export interface TipCoffeeOption {
   readonly type: TipCoffeeType;
-  readonly tierLabel: string;
   readonly amountCents: number;
   readonly displayName: string;
   readonly image: {
@@ -21,7 +20,6 @@ export interface TipCoffeeOption {
 const TIP_COFFEE_OPTION_BY_TYPE: Record<TipCoffeeType, TipCoffeeOption> = {
   small: {
     type: "small",
-    tierLabel: "Small",
     amountCents: 499,
     displayName: "Velvet Espresso",
     image: {
@@ -33,7 +31,6 @@ const TIP_COFFEE_OPTION_BY_TYPE: Record<TipCoffeeType, TipCoffeeOption> = {
   },
   medium: {
     type: "medium",
-    tierLabel: "Medium",
     amountCents: 999,
     displayName: "Golden Reserve",
     image: {
@@ -45,7 +42,6 @@ const TIP_COFFEE_OPTION_BY_TYPE: Record<TipCoffeeType, TipCoffeeOption> = {
   },
   large: {
     type: "large",
-    tierLabel: "Large",
     amountCents: 1999,
     displayName: "Imperial Grand Cru",
     image: {