Here are packages in extra that depend on tetex (which has now been
replaced by texlive-core):
makedepends:
evince
yodl
depends:
kile
lyx
latex2html
texmacs
I found those using
find /var/abs -name PKGBUILD -exec grep -H tetex '{}' \;
so I should not have missed any.
There is no hurry since texlive-core provides tetex anyway.
Regards, F