stop rule gls entries polluting the index

glossary.tex

@@ -33,7 +33,6 @@
 \glssetcategoryattribute{rules}{nonumberlist}{true}
 \glssetcategoryattribute{rules}{noindex}{true}
 \glssetcategoryattribute{rules}{glossnamefont}{textsc}
-\glssetcategoryattribute{rules}{dualindex}{true}
 \glssetcategoryattribute{abbreviation}{glossnamefont}{textit}
 
 \glssetcategoryattribute{location}{glossnamefont}{emph}