refactor: 项目结构优化

src/main/java/com/youlai/system/common/exception/GlobalExceptionHandler.java

@@ -22,7 +22,6 @@ import javax.servlet.ServletException;
 import javax.validation.ConstraintViolation;
 import javax.validation.ConstraintViolationException;
 import java.sql.SQLSyntaxErrorException;
-import java.util.concurrent.CompletionException;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;