Clean up .utils

src/main/java/emu/grasscutter/utils/TsvUtils.java

@@ -1,7 +1,5 @@
 package emu.grasscutter.utils;
 
-import static emu.grasscutter.utils.Utils.nonRegexSplit;
-
 import com.google.gson.*;
 import com.google.gson.annotations.SerializedName;
 import emu.grasscutter.Grasscutter;
@@ -9,6 +7,8 @@ import it.unimi.dsi.fastutil.Pair;
 import it.unimi.dsi.fastutil.ints.Int2ObjectRBTreeMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectSortedMap;
 import it.unimi.dsi.fastutil.objects.Object2IntArrayMap;
+import lombok.val;
+
 import java.io.IOException;
 import java.lang.reflect.*;
 import java.nio.charset.StandardCharsets;
@@ -19,11 +19,12 @@ import java.util.*;
 import java.util.function.Function;
 import java.util.stream.IntStream;
 import java.util.stream.Stream;
-import lombok.val;
+
+import static emu.grasscutter.utils.Utils.nonRegexSplit;
 
 // Throughout this file, commented System.out.println debug log calls are left in.
 // This is because the default logger will deadlock when operating on parallel streams.
-public class TsvUtils {
+public final class TsvUtils {
     private static final Map<Type, Object> defaultValues =
             Map.ofEntries(
                     // Map.entry(String.class, null),  // builder hates null values
@@ -679,4 +680,8 @@ public class TsvUtils {
             return map;
         }
     }
+
+    private TsvUtils() {
+        // No instantiation.
+    }
 }