How to hide buttons next to line numbers?
Answered

The gutter is made so big by the buttons. I don't need them. I've fruitlessly tried to figure out how to hide them for a while now. Any help?
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"In 2016.1 and later, you can use
File | Settings | Editor | General | Gutter Icons
to configure (most) of gutter icons or completely switch them off"
Solved my problem.