main/libx11: disable xf86bigfont

this can't be used by anything

main/libx11/APKBUILD

@@ -31,7 +31,8 @@ build() {
 		--prefix=/usr \
 		--sysconfdir=/etc \
 		--mandir=/usr/share/man \
-		--localstatedir=/var
+		--localstatedir=/var \
+		--disable-xf86bigfont
 	make
 }