resolved: don't call dns_cache_remove() from dns_cache_put_negative()

We call it anyway as one of the first calls in dns_cache_put(), hence
there's no reason to do this multiple times.

src/resolve/resolved-dns-cache.c

@@ -367,8 +367,6 @@ static int dns_cache_put_negative(
         assert(key);
         assert(owner_address);
 
-        dns_cache_remove(c, key);
-
         /* Never cache pseudo RR keys */
         if (dns_class_is_pseudo(key->class))
                 return 0;