deleted import to LabelUpdateDTO.java

Author: sergeycherkasovv

src/main/java/hexlet/code/dto/label/LabelUpdateDTO.java

@@ -1,7 +1,6 @@
 package hexlet.code.dto.label;
 
 import jakarta.persistence.Column;
-import jakarta.validation.constraints.NotNull;
 import jakarta.validation.constraints.Size;
 import lombok.Getter;
 import lombok.Setter;