remove unused vis_message_hide() function

the message window gets closed like a normal window and nothing calls
this function. In fact, it wasn't even used when it was added 8 years
ago in 979ab79.

1 files changed, 0 insertions, 2 deletions

diff --git a/vis.h b/vis.h
index 441d184..85a458a 100644
--- a/vis.h
+++ b/vis.h
@@ -248,8 +248,6 @@ void vis_info_hide(Vis*);
 
 /** Display arbitrary long message in a dedicated window. */
 void vis_message_show(Vis*, const char *msg);
-/** Close message window. */
-void vis_message_hide(Vis*);
 /**
  * @}
  * @defgroup vis_changes