删除多余引入

src/main/java/com/emr/util/img2PdfUtil.java

@@ -16,7 +16,6 @@ import org.springframework.web.context.request.RequestContextHolder;
 import org.springframework.web.context.request.ServletRequestAttributes;
 
 import javax.imageio.ImageIO;
-import javax.imageio.spi.IIORegistry;
 import javax.media.jai.JAI;
 import javax.media.jai.RenderedOp;
 import javax.servlet.http.HttpServletRequest;