depth: Use gameOptions.getSkillLevel if not Developer Mode

include/config.h

@@ -72,7 +72,6 @@
 #define DEFAULT_RULE_NUMBER 1
 
 #define DEPTH_ADJUST (0)
-//#define FIX_DEPTH   (25)
 
 //#define NULL_MOVE
 

src/mills.cpp

@@ -428,9 +428,9 @@ void move_priority_list_shuffle()
 
 Depth getSearchDepth(const Position *pos)
 {
-#if defined(FIX_DEPTH)
-    return FIX_DEPTH;
-#endif
+    if (!gameOptions.getDeveloperMode()) {
+        return gameOptions.getSkillLevel();
+    }
 
     Depth d = 0;