Remove temporary file.

protogeni/lib/GeniTicket.pm.in

 #!/usr/bin/perl -wT
 #
 # GENIPUBLIC-COPYRIGHT
-# Copyright (c) 2008-2011 University of Utah and the Flux Group.
+# Copyright (c) 2008-2012 University of Utah and the Flux Group.
 # All rights reserved.
 #
 package GeniTicket;
@@ -748,6 +748,7 @@ sub RunSigner($$)
 	print STDERR "Could not sign $filename\n";
 	return -1;
     }
+    unlink($filename);
     $self->{'ticket_string'} = $ticket;
     return 0;
 }