Tests: revert unintentional memcached_fake.t change.

It was used for local testing and accidentally slipped into 0cc5269bc62c.

memcached_fake.t

diff --git a/memcached_fake.t b/memcached_fake.t
index 4227762..d3497df 100644
--- a/memcached_fake.t
+++ b/memcached_fake.t
@@ -30,7 +30,6 @@
 daemon off;
 
 events {
-use select;
 }
 
 http {