Turn splitseconds into an array

It's always 30, there's no need for it to be a vector.

desktop_version/src/UtilityClass.h

@@ -51,7 +51,7 @@ public:
     int glow;
     int slowsine;
     int glowdir;
-    std::vector<int> splitseconds;
+    int splitseconds[30];
 };
 
 extern UtilityClass help;