Stopped inlining st* classes?

[waltercruz]

Describe the bug
SVGO is not inlining st[1-9] classes

To Reproduce
Steps to reproduce the behavior:

1. get this file: https://gist.githubusercontent.com/waltercruz/7bdf372457effd3f304b391b54b3c813/raw/b6460d64874f59b05eb2e5261aeb370a2ab1aec8/instagram.svg
2. compress it with svgo

Expected behavior
st1, st2 and st3 classes should be inlined

Desktop (please complete the following information):

• SVGO 2.7.0
• NodeJs 16.10
• Mac OS Catalina

[waltercruz]

oops, my mistake. Closing!

[TrySound]

what was it?

[waltercruz]

in the <style> there was 4 classes - st0, st1, st2 and st3. This svg uses only st0 - and it was correctly inlined. In previous versions, the unused classes were deleted, but now the unused classes are kept. It's a different behaviour, but it's not breaking anything!

[TrySound]

Actually minifyStyles should remove unused classes. Will take a look later.

[mahnunchik]

Hi, I've faced with the same issue with different svg image: https://gist.githubusercontent.com/mahnunchik/23066a318de2956df3c769c87e4e6cbd/raw/e0f246d0e26ce770f3c3adca748a5a454907f8bb/crypto-com-coin-cro-logo.svg

<style>
    .st1{fill:url(#SVGID_00000016760000628848746960000000291323288447655331_)}
</style>

st1 class not used and not removed.