Stream: removed useless typedef.

src/stream/ngx_stream_proxy_module.c

diff --git a/src/stream/ngx_stream_proxy_module.c b/src/stream/ngx_stream_proxy_module.c
index 6800500..42c3374 100644
--- a/src/stream/ngx_stream_proxy_module.c
+++ b/src/stream/ngx_stream_proxy_module.c
@@ -10,9 +10,6 @@
 #include <ngx_stream.h>
 
 
-typedef void (*ngx_stream_proxy_handler_pt)(ngx_stream_session_t *s);
-
-
 typedef struct {
     ngx_msec_t                       connect_timeout;
     ngx_msec_t                       timeout;