[archiso] Remove testiso from Makefile

Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>

archiso/Makefile

@@ -5,8 +5,6 @@ install: install-program install-hooks install-examples install-doc
 install-program:
 	# install to sbin since script only usable by root
 	install -D -m 755 mkarchiso $(DESTDIR)/usr/sbin/mkarchiso
-	# testiso can be used by anyone
-	install -D -m 755 testiso $(DESTDIR)/usr/bin/testiso
 
 install-hooks:
 	# hooks/install are needed by mkinitcpio