Response to a Technical Check求助

　　Response to a Technical Check求助。投了一篇文章，编辑给出了些问题，下面一个不知道怎么处理
Comments:
TECHNICAL
1) Two sets of line numbering should not be present. There should be only one set of line numbering should be present in the manuscript.

各位大虾帮帮忙，这条意见是啥意思，该怎么改？