deps: remove duplicate uv__loop_configure

The latest merge resulted in uv__loop_configure being defined twice on
Windows. This changes removes one of these duplicates to fix the build
on this platform.

deps/uv/src/win/core.c

@@ -277,11 +277,6 @@ int uv__loop_configure(uv_loop_t* loop, uv_loop_option option, va_list ap) {
 }
 
 
-int uv__loop_configure(uv_loop_t* loop, uv_loop_option option, va_list ap) {
-  return UV_ENOSYS;
-}
-
-
 int uv_backend_fd(const uv_loop_t* loop) {
   return -1;
 }