Remove inheritance

src/main/java/koz01/java2/lab10/Staff.java

@@ -6,8 +6,6 @@ import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.GenerationType;
 import javax.persistence.Id;
-import javax.persistence.Inheritance;
-import javax.persistence.InheritanceType;
 
 import lombok.Data;
 import lombok.NoArgsConstructor;
@@ -15,7 +13,6 @@ import lombok.NoArgsConstructor;
 @Data
 @Entity
 @NoArgsConstructor
-@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
 public class Staff implements Serializable {
 
 	@Id