Delete springbucks.md

Chapter 3/springbucks.md

@@ -1,57 +0,0 @@
-```puml
-Customer -> Waiter: 询问菜单
-Customer -> Waiter: 点单
-Customer -> Waiter: 支付
-Waiter --> Barista: 通知开始制作
-Barista -> Barista: 制作咖啡
-Barista --> Waiter: 通知制作完毕
-Waiter --> Customer: 通知取咖啡
-```
-
-```puml
-component Customer
-component Waiter
-component Barista
-database DB
-queue MQ
-storage Cache
-
-Customer -> Waiter
-Waiter -> Cache
-Waiter -> DB
-Waiter ..> MQ
-MQ ..> Barista
-Barista -> DB
-Barista ..> MQ
-MQ ..> Waiter
-MQ ..> Customer
-```
-
-```puml
-object Customer
-object Waiter
-object Barista
-object Coffee
-object Order
-
-Order "1" *-- "1..n" Coffee
-Order "n" -- "1" Customer: order
-Order "n" -- "1" Waiter: serve
-Order "n" -- "0..1" Barista: brew
-```
-
-```puml
-state 可取消 {
-    [*] --> 初始
-    初始 --> 已支付
-    初始 --> 取消
-    已支付 --> 取消
-    取消 --> [*]
-}
-state 不可取消 {
-    已支付 --> 制作中
-    制作中 --> 制作完毕
-    制作完毕 --> 已取货
-    已取货 --> [*]
-}
-```