Remove a word from a string SQLite Android

I have a column in my SQLite table named 'img_name'. An example of data in that column: '/storage/extSdCard/img1.jpg /storage/extSdCard/img2.jpg /storage/extSdCard/pic3.jpg'. Lets say I wanted to delete an image. I would delete the corresponding word(path). Only problem is, I do not know how to delete a specific word(path) from that column.

Any help will be appreciated.