Remove seed_rng calls from scp, sftp, sftp-server.

These binaries don't use OpenSSL's random functions.  The next step
will be to stop linking them against libcrypto.  ok djm@

scp.c

@@ -455,8 +455,6 @@ main(int argc, char **argv)
 	/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
 	sanitise_stdfd();
 
-	seed_rng();
-
 	msetlocale();
 
 	/* Copy argv, because we modify it */

sftp-server-main.c

@@ -42,8 +42,6 @@ main(int argc, char **argv)
 	/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
 	sanitise_stdfd();
 
-	seed_rng();
-
 	if ((user_pw = getpwuid(getuid())) == NULL) {
 		fprintf(stderr, "No user found for uid %lu\n",
 		    (u_long)getuid());

sftp.c

@@ -2406,8 +2406,6 @@ main(int argc, char **argv)
 	sanitise_stdfd();
 	msetlocale();
 
-	seed_rng();
-
 	__progname = ssh_get_progname(argv[0]);
 	memset(&args, '\0', sizeof(args));
 	args.list = NULL;