diff --git a/놀이터(예제 코드 작성)/jackson/src/main/kotlin/com/banjjoknim/playground/jackson/common/DoSerialize.kt b/놀이터(예제 코드 작성)/jackson/src/main/kotlin/com/banjjoknim/playground/jackson/common/DoSerialize.kt
deleted file mode 100644
index b6b81bf..0000000
--- a/놀이터(예제 코드 작성)/jackson/src/main/kotlin/com/banjjoknim/playground/jackson/common/DoSerialize.kt	
+++ /dev/null
@@ -1,5 +0,0 @@
-package com.banjjoknim.playground.jackson.common
-
-@Retention(AnnotationRetention.RUNTIME)
-@Target(AnnotationTarget.PROPERTY)
-annotation class DoSerialize(val doSerialize: Boolean = false)