Remove command that sets setuid bit on the fusermount binary.

URL: crbug.com/508744
From: Samuel Tan <samueltan@chromium.org>
---
--- fuse-2.8.6/util/Makefile.in	2011-09-13 01:53:05.000000000 -0700
+++ patched/util/Makefile.in	2015-07-09 16:44:49.895909954 -0700
@@ -584,7 +584,6 @@ uninstall-am: uninstall-binPROGRAMS unin
 
 
 install-exec-hook:
-	-chmod u+s $(DESTDIR)$(bindir)/fusermount
 	@if test ! -e $(DESTDIR)/dev/fuse; then \
 		$(mkdir_p) $(DESTDIR)/dev; \
 		echo "mknod $(DESTDIR)/dev/fuse -m 0666 c 10 229 || true"; \