Revert "findalldevstest: temporary test to see if this squelches Valgrind warnings."

This reverts commit 778f2c0.

Yes, Illumos (and probably Solaris) may fflush() all the standard I/O
streams before exiting, but it doesn't fclose() them, so stuff might not
be freed before exiting (but it should be accessible from stdin, stdout,
or stderr, so it's at worst a "still reachable" issue - what gives?).

There *appears* to be a suppressor for that in the Solaris valgrind, but
it doesn't seem to be working.

Author: guyharris

testprogs/findalldevstest.c

@@ -183,11 +183,6 @@ int main(int argc _U_, char **argv _U_)
   }
 
   pcap_freealldevs(alldevs);
-//
-// XXX - temporary hack to see if this squelches Valgrind warnings
-// on Illumos about leaks from stdio.
-//
-fclose(stdout);
   exit(exit_status);
 }