Remove unused annotations

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/Annotations.kt

@@ -61,19 +61,4 @@ annotation class MiraiDebugAPI(
 @Target(CLASS, PROPERTY, FIELD, CONSTRUCTOR, FUNCTION, PROPERTY_GETTER, PROPERTY_SETTER, TYPEALIAS)
 @Retention(AnnotationRetention.BINARY)
 @MustBeDocumented
-annotation class SinceMirai(val version: String)
-
+annotation class SinceMirai(val version: String)
\ No newline at end of file
-/**
- * 包的最后一次修改时间, 和分析时使用的 TIM 版本
- */
-@MustBeDocumented
-@Target(FUNCTION, CLASS, PROPERTY)
-@Retention(AnnotationRetention.SOURCE)
-annotation class PacketVersion(val date: String, val timVersion: String)
-
-/**
- * 带有这个注解的 [Packet] 将不会被记录在 log 中.
- */
-@Target(CLASS)
-@Retention(AnnotationRetention.RUNTIME)
-annotation class NoLog
\ No newline at end of file