Remove the serializers that were decided against

Author: dkhalanskyjb

core/common/src/serializers/LocalDateSerializers.kt

@@ -62,6 +62,4 @@ object LocalDateComponentSerializer: KSerializer<LocalDate> {
         }
     }
 
-}
-
-expect object LocalDateLongSerializer: KSerializer<LocalDate>
+}

core/common/src/serializers/LocalDateTimeSerializers.kt

@@ -84,7 +84,4 @@ object LocalDateTimeComponentSerializer: KSerializer<LocalDateTime> {
         }
     }
 
-}
-
-expect object LocalDateTimeCompactSerializer: KSerializer<LocalDateTime>
-
+}