Remove `utils/convert-docs.php`, which isn't in use
Remove `utils/convert-docs.php`, which isn't in use

In fact, it hasn't been in use for ages

2ndkauboy/wp-cli,2ndkauboy/wp-cli,gitlost/wp-cli,trepmal/wp-cli,gitlost/wp-cli,miya0001/wp-cli,rodrigoprimo/wp-cli,trepmal/wp-cli,aaemnnosttv/wp-cli,GaryJones/wp-cli,miya0001/wp-cli,aaemnnosttv/wp-cli,GaryJones/wp-cli,rodrigoprimo/wp-cli,2ndkauboy/wp-cli,aaemnnosttv/wp-cli,trepmal/wp-cli,GaryJones/wp-cli,miya0001/wp-cli,gitlost/wp-cli,rodrigoprimo/wp-cli