Dead code clean: #if 0 removal in apps

Reviewed-by: Tim Hudson <tjh@openssl.org>
diff --git a/apps/openssl.c b/apps/openssl.c
index b196285..50c8275 100644
--- a/apps/openssl.c
+++ b/apps/openssl.c
@@ -301,12 +301,7 @@
     }
     CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
 
-#if 0
-    if (getenv("OPENSSL_DEBUG_LOCKING") != NULL)
-#endif
-    {
-        CRYPTO_set_locking_callback(lock_dbg_cb);
-    }
+    CRYPTO_set_locking_callback(lock_dbg_cb);
 
     if (getenv("OPENSSL_FIPS")) {
 #ifdef OPENSSL_FIPS