Remove rt deadline.

The "good" speed levels are universally better than the "rt" ones,
running faster to achieve the same quality.

rt mode also turned off alt refs and lag-in-frames, but these
are still accessible separately (and the low latency test case
explicitly sets them).

Some features were used by the rt scale and not the good scale.
Two additional "good" levels, 7 and 8, were added to accomidate
these features and not reduce test coverage.

Change-Id: I3a6a78ddb664511762c197bc41f3a9909665b565
diff --git a/warnings.c b/warnings.c
index 7575925..16d5c6c 100644
--- a/warnings.c
+++ b/warnings.c
@@ -24,8 +24,6 @@
 static const char quantizer_warning_string[] =
     "Bad quantizer values. Quantizer values should not be equal, and should "
     "differ by at least 8.";
-static const char lag_in_frames_with_realtime[] =
-    "Lag in frames is ignored when deadline is set to realtime.";
 
 struct WarningListNode {
   const char *warning_string;
@@ -77,23 +75,15 @@
     add_warning(quantizer_warning_string, warning_list);
 }
 
-static void check_lag_in_frames_realtime_deadline(
-    int lag_in_frames, int deadline, struct WarningList *warning_list) {
-  if (deadline == AOM_DL_REALTIME && lag_in_frames != 0)
-    add_warning(lag_in_frames_with_realtime, warning_list);
-}
-
 void check_encoder_config(int disable_prompt,
                           const struct AvxEncoderConfig *global_config,
                           const struct aom_codec_enc_cfg *stream_config) {
   int num_warnings = 0;
   struct WarningListNode *warning = NULL;
   struct WarningList warning_list = { 0 };
-
+  (void)global_config;
   check_quantizer(stream_config->rc_min_quantizer,
                   stream_config->rc_max_quantizer, &warning_list);
-  check_lag_in_frames_realtime_deadline(stream_config->g_lag_in_frames,
-                                        global_config->deadline, &warning_list);
   /* Count and print warnings. */
   for (warning = warning_list.warning_node; warning != NULL;
        warning = warning->next_warning, ++num_warnings) {