Leave only the first word in each line

Hey, i want to set my notepad file that include:

julia_babicheva,="3787449",www.instagram.com/.../2019 9:41:47 PM,Followed outside
fryhide,="6075717317",www.instagram.com/.../2019 9:43:51 PM,Followed outside
dagmartureluren,="683954603",www.instagram.com/.../2019 9:46:55 PM,Followed outside
suaramusic,="373001669",www.instagram.com/.../2019 9:48:59 PM,Followed outside

and i want to set this file to be like this:

julia_babicheva

fryhide

dagmartureluren

suaramusic

Thank you for your help!