Provided by: libfontconfig-doc_2.15.0-1.1ubuntu2_all 
NAME
FcStrSetDel - delete from a string set
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcBool FcStrSetDel (FcStrSet *set, const FcChar8 *s);
DESCRIPTION
Removes s from set, returning FcTrue if s was a member else FcFalse.