Core: removed post_accept_timeout. Keeping post_accept_timeout in ngx_listening_t is no longer needed since we've switched to 1 second timeout for deferred accept in 5541:fdb67cfc957d. Further, using it in HTTP code can result in client_header_timeout being used from an incorrect server block, notably if address-specific virtual servers are used along with a wildcard listening socket, or if we've switched to a different server block based on SNI in SSL handshake.

--- a/src/core/ngx_connection.h
+++ b/src/core/ngx_connection.h
@@ -45,8 +45,6 @@ struct ngx_listening_s {
     size_t              pool_size;
     /* should be here because of the AcceptEx() preread */
     size_t              post_accept_buffer_size;
-    /* should be here because of the deferred accept */
-    ngx_msec_t          post_accept_timeout;
 
     ngx_listening_t    *previous;
     ngx_connection_t   *connection;