As is mentioned in the trailing comment and a warning in the log:
Package fixltx2e Warning: fixltx2e is not required with releases after 2015
(fixltx2e) All fixes are now in the LaTeX kernel.
(fixltx2e) See the latexrelease package for details.
, it should be safe to comment it out in 2023.
Signed-off-by: Akira Yokosawa <akiyks@xxxxxxxxx>
---
perfbook-lt.tex | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/perfbook-lt.tex b/perfbook-lt.tex
index efb49bd0abe7..7239d2350477 100644
--- a/perfbook-lt.tex
+++ b/perfbook-lt.tex
@@ -22,7 +22,7 @@
\UseMicrotypeSet[protrusion]{basicmath} % disable protrusion for tt fonts
\usepackage{etoolbox}
-\usepackage{fixltx2e} % for \textsubscript, nop on Tex Live 2015 and later
+%\usepackage{fixltx2e} % for \textsubscript, nop since Tex Live 2015
\usepackage{float}
\floatstyle{ruled}
\newfloat{listing}{tbp}{lst}[chapter]
--
2.25.1
