chore: remove unused hasClass method (use HibiscusCommons method instead)

common/src/main/java/com/hibiscusmc/hmccosmetics/util/HMCCServerUtils.java

@@ -157,13 +157,4 @@ public class HMCCServerUtils {
         }
         return nextYaw;
     }
-
-    public static boolean hasClass(String className) {
-        try {
-            Class.forName(className);
-            return true;
-        } catch (ClassNotFoundException e) {
-            return false;
-        }
-    }
 }