Revert "console.lua: close with right click"

This reverts commit ad0c29e.

This should be unnecessary now that the menu has a visible horizontal
and vertical hitbox, and was not discoverable anyway. Right click can be
useful even while the console is open to pause or open a context menu.
Requested in
#15145 (comment).

DOCS/man/console.rst

@@ -100,9 +100,6 @@ Shift+TAB
 Ctrl+l
     Clear all log messages from the console.
 
-MBTN_RIGHT
-    Hide the console.
-
 MBTN_MID
     Paste text (uses the primary selection on X11 and Wayland).
 

player/lua/console.lua

@@ -1777,7 +1777,6 @@ local function get_bindings()
         { 'ins',         handle_ins                             },
         { 'shift+ins',   function() paste(false) end            },
         { 'mbtn_mid',    function() paste(false) end            },
-        { 'mbtn_right',  function() set_active(false) end       },
         { 'left',        function() prev_char() end             },
         { 'ctrl+b',      function() page_up_or_prev_char() end  },
         { 'right',       function() next_char() end             },