Remove final from GTUtility

Author: Zorbatron

src/main/java/gregtech/api/util/GTUtility.java

@@ -76,7 +76,7 @@
 import java.util.function.Function;
 import java.util.function.Predicate;
 
-public final class GTUtility {
+public class GTUtility {
 
     public static <T> String[] mapToString(T[] array, Function<T, String> mapper) {
         String[] result = new String[array.length];