Revert "clarify no space after -F (issue 108)"

This reverts commit f02ce3821c.

That commit accidently imported code that broke transparent
proxying.

probe.h

@@ -24,7 +24,6 @@ struct proto {
                      * 1: Log incoming connection
                      */
     int keepalive; /* 0: No keepalive ; 1: Set Keepalive for this connection */
-    int transparent; /* 0: opaque proxy ; 1: transparent proxy */
 
     /* function to probe that protocol; parameters are buffer and length
      * containing the data to probe, and a pointer to the protocol structure */