diff --git a/ks-new-engines.clo b/ks-new-engines.clo
index 2c779080d471a7d575f693fd3d60b3a89ac3d290..3a201e8438854aef18aeb7fe6208bbc699e167f2 100644
--- a/ks-new-engines.clo
+++ b/ks-new-engines.clo
@@ -25,22 +25,6 @@
 
 \RequirePackage[usefilenames]{firamath-otf}
 
-\iffalse  
-\RequirePackage{unicode-math} 
-\setmathfont{FiraMath-Regular.otf}[
-%\setmathfont{LatoMath.otf}[
-  Scale=1,
-  math-style=TeX,
-  bold-style=TeX,
-  Numbers={Lining,Proportional},
-]
-\setoperatorfont\mathsf 
-\setmathfont{texgyreheros-regular.otf}[range=up/{Latin,Greek,num}]
-\setmathfont{texgyreheros-italic.otf}[range=it/{latin,greek}]
-\setmathfont{texgyreheros-bolditalic.otf}[range=bfit/{latin,greek}]
-\setmathfont{texgyreheros-bold.otf}[range=bfup/{latin,greek}]
-\fi
-
 \unimathsetup{%
   math-style = TeX,
   bold-style = TeX,