Temporarily disable appdash from docker-compose

Until I read the doc and find how to limit the retention,
otherwise it just eats all my ram and cpu and things start to fall
apart.

PUBLISHED_FROM=eb33fb44736f07b992270689217aca4af70513ff

docs/c-api/net.h/mg_set_timer.md

@@ -1,31 +0,0 @@
----
-title: "mg_set_timer()"
-decl_name: "mg_set_timer"
-symbol_kind: "func"
-signature: |
-  double mg_set_timer(struct mg_connection *c, double timestamp);
----
-
-Schedule MG_EV_TIMER event to be delivered at `timestamp` time.
-`timestamp` is a UNIX time (a number of seconds since Epoch). It is
-`double` instead of `time_t` to allow for sub-second precision.
-Return the old timer value.
-
-Example: set connect timeout to 1.5 seconds:
-
-```
- c = mg_connect(&mgr, "cesanta.com", ev_handler);
- mg_set_timer(c, mg_time() + 1.5);
- ...
-
- void ev_handler(struct mg_connection *c, int ev, void *ev_data) {
- switch (ev) {
-   case MG_EV_CONNECT:
-     mg_set_timer(c, 0);  // Clear connect timer
-     break;
-   case MG_EV_TIMER:
-     log("Connect timeout");
-     c->flags |= MG_F_CLOSE_IMMEDIATELY;
-     break;
-``` 
-