WordPress 1 Image duplicated on every post (5000+ posts) HELP!!

i helped client migrate 1 site , after migration every post has same image published twice.

short of going post post, ideas how can rid of image?

 

i haven't tried it, doing search , replace using this.

http://www.hongkiat.com/blog/how-to-search-and-replace-wordpress-in-blog-post/

 

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