removed foreign architecture

[fxkl47BF]

i run bullseye amd64
i had i386 as a foreign architecture and removed it with no problems
i noticed the message
warning: while removing libsane1:i386, directory '/usr/lib/i386-linux-gnu/sane' 
not empty so not removed
/usr/lib/i386-linux-gnu/ has
libsane.la  libsane.so  libsane.so.1  libsane.so.1.0.26  pkgconfig/  sane/
/usr/lib/i386-linux-gnu/sane has a passel of libs
should these be left, removed, or none of the above