traces: don't save more ground positions than intended

tones ground position frequency down after
874c84e
unintentionally increased it

globe_index.c

@@ -2314,14 +2314,9 @@ int traceAdd(struct aircraft *a, struct modesMessage *mm, int64_t now, int stale
         max_speed_diff *= 2;
     }
 
-    if (max_elapsed > 5 * SECONDS) {
-        if (a->pos_reliable_valid.source == SOURCE_MLAT) {
-            min_elapsed = 1500;
-            max_elapsed = imax(max_elapsed / 2, 5 * SECONDS);
-        }
-        if (a->pos_reliable_valid.source != SOURCE_MLAT && !trackVState(now, &a->track_valid, &a->pos_reliable_valid)) {
-            max_elapsed = imax(max_elapsed / 4, 5 * SECONDS);
-        }
+    if (max_elapsed > 5 * SECONDS && a->pos_reliable_valid.source == SOURCE_MLAT) {
+        min_elapsed = 1500;
+        max_elapsed = imax(max_elapsed / 2, 5 * SECONDS);
     }
     // some towers on MLAT .... create unnecessary data
     // only reduce data produced for configurations with trace interval more than 5 seconds, others migh want EVERY DOT :)
@@ -2350,6 +2345,10 @@ int traceAdd(struct aircraft *a, struct modesMessage *mm, int64_t now, int stale
         }
     }
 
+    if (max_elapsed > 5 * SECONDS && a->pos_reliable_valid.source != SOURCE_MLAT && track == -1) {
+            max_elapsed = imax(max_elapsed / 4, 5 * SECONDS);
+    }
+
     if (a->trace_current_len == 0)
         goto save_state;