remove unused variable "ice_config_t *config" from format_prepare_headers()

svn path=/icecast/trunk/icecast/; revision=18465

src/format.c

@@ -292,7 +292,6 @@ static int format_prepare_headers (source_t *source, client_t *client)
     int bytes;
     int bitrate_filtered = 0;
     avl_node *node;
-    ice_config_t *config;
 
     remaining = client->refbuf->len;
     ptr = client->refbuf->data;