Retire UCI_AnalyseMode option

It has been obsoleted out already some time ago
and currently there is no point in changing eval
score according to if we are in game or analyzing.

So retire the option.

No functional change.

src/ucioption.cpp

@@ -85,7 +85,6 @@ void init(OptionsMap& o) {
   o["Minimum Thinking Time"]       = Option(20, 0, 5000);
   o["Slow Mover"]                  = Option(80, 10, 1000);
   o["UCI_Chess960"]                = Option(false);
-  o["UCI_AnalyseMode"]             = Option(false, on_eval);
 }