avformat/http: remove unused function ff_http_get_shutdown_status

ff_http_get_shutdown_status is unused after ticket 9010 fixed.

Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

libavformat/http.c

@@ -441,21 +441,6 @@ fail:
         return ret;
     return ff_http_averror(s->http_code, AVERROR(EIO));
 }
-int ff_http_get_shutdown_status(URLContext *h)
-{
-    int ret = 0;
-    HTTPContext *s = h->priv_data;
-
-    /* flush the receive buffer when it is write only mode */
-    char buf[1024];
-    int read_ret;
-    read_ret = ffurl_read(s->hd, buf, sizeof(buf));
-    if (read_ret < 0) {
-        ret = read_ret;
-    }
-
-    return ret;
-}
 
 int ff_http_do_new_request(URLContext *h, const char *uri) {
     return ff_http_do_new_request2(h, uri, NULL);

libavformat/http.h

@@ -37,15 +37,6 @@
  */
 void ff_http_init_auth_state(URLContext *dest, const URLContext *src);
 
-/**
- * Get the HTTP shutdown response status, be used after http_shutdown.
- *
- * @param h pointer to the resource
- * @return a negative value if an error condition occurred, 0
- * otherwise
- */
-int ff_http_get_shutdown_status(URLContext *h);
-
 /**
  * Send a new HTTP request, reusing the old connection.
  *