disable issue 140's test.

the fix for issue 140 only helped in the case of you poking at memcached with
a handful of items (or this particular test). On real instances you could
easily exhaust the 50 item search and still come up with a crap item.

It was removed because adding the proper locks back in that place is
difficult, and it makes "stats items" take longer in a gross lock anyway.

t/issue_140.t

@@ -1,11 +1,15 @@
 #!/usr/bin/perl
 
 use strict;
-use Test::More tests => 7;
+use Test::More;
 use FindBin qw($Bin);
 use lib "$Bin/lib";
 use MemcachedTest;
 
+plan skip_all => 'Fix for Issue 140 was only an illusion';
+
+plan tests => 7;
+
 my $server = new_memcached();
 my $sock = $server->sock;