[PATCH -perfbook 2/6] Stop loading braket.sty

It was needed for a section removed back in commit 972946a5298a
("future/QC: Remove quantum-computing section").  Comment it out.

Signed-off-by: Akira Yokosawa <[email protected]>
---
 perfbook-lt.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/perfbook-lt.tex b/perfbook-lt.tex
index ba40146e..0dc05325 100644
--- a/perfbook-lt.tex
+++ b/perfbook-lt.tex
@@ -92,7 +92,7 @@
 \usepackage{epigraph}[2020/01/02] % latest version prevents orphaned epigraph
 \setlength{\epigraphwidth}{2.6in}
 \usepackage[xspace]{ellipsis}
-\usepackage{braket} % for \ket{} macro in QC section
+%\usepackage{braket} % for \ket{} macro in QC section
 \usepackage{siunitx} % for \num{} macro and \unit{} (such as \percent)
 \sisetup{group-minimum-digits=4,group-separator={,},group-digits=integer}
 \providecommand{\unit}{\si} % for siunitx < 3.0
-- 
2.43.0