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/http.h/mg_send_websocket_handshake2.md

@@ -1,19 +0,0 @@
----
-title: "mg_send_websocket_handshake2()"
-decl_name: "mg_send_websocket_handshake2"
-symbol_kind: "func"
-signature: |
-  void mg_send_websocket_handshake2(struct mg_connection *nc, const char *path,
-                                    const char *host, const char *protocol,
-                                    const char *extra_headers);
----
-
-Send websocket handshake to the server.
-
-`nc` must be a valid connection, connected to a server. `uri` is an URI
-to fetch, `host` goes into the `Host` header, `protocol` goes into the
-`Sec-WebSocket-Proto` header (NULL to omit), extra_headers` is extra HTTP
-headers to send or `NULL`.
-
-This function is intended to be used by websocket client. 
-