axe useless code

src/http/modules/ngx_http_dav_module.c

diff --git a/src/http/modules/ngx_http_dav_module.c b/src/http/modules/ngx_http_dav_module.c
index 8c45e64..d1b9b35 100644
--- a/src/http/modules/ngx_http_dav_module.c
+++ b/src/http/modules/ngx_http_dav_module.c
@@ -354,12 +354,6 @@
         return NGX_HTTP_UNSUPPORTED_MEDIA_TYPE;
     }
 
-    rc = ngx_http_discard_request_body(r);
-
-    if (rc != NGX_OK) {
-        return rc;
-    }
-
     ngx_http_map_uri_to_path(r, &path, &root, 0);
 
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,