remove stale pragma

src/os/win32/ngx_win32_config.h

diff --git a/src/os/win32/ngx_win32_config.h b/src/os/win32/ngx_win32_config.h
index 11b266f..e880cbf 100644
--- a/src/os/win32/ngx_win32_config.h
+++ b/src/os/win32/ngx_win32_config.h
@@ -66,9 +66,6 @@
 /* FD_SET() and FD_CLR(): conditional expression is constant */
 #pragma warning(disable:4127)
 
-/* function 'ngx_handle_write_event' not inlined */
-#pragma warning(disable:4710)
-
 #endif