Fix compile issues + missing licenses

Author: Jonathing

json-data-utils/src/main/java/net/minecraftforge/util/data/OS.java

@@ -4,7 +4,6 @@
  */
 package net.minecraftforge.util.data;
 
-import net.minecraftforge.util.logging.SimpleLogger;
 import org.jetbrains.annotations.Nullable;
 
 import java.io.IOException;

json-data-utils/src/main/java/net/minecraftforge/util/data/json/AssetsIndex.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) Forge Development LLC and contributors
+ * Copyright (c) Forge Development LLC
  * SPDX-License-Identifier: LGPL-2.1-only
  */
 package net.minecraftforge.util.data.json;

json-data-utils/src/main/java/net/minecraftforge/util/data/json/Config.java

@@ -1,8 +1,7 @@
 /*
- * Copyright (c) Forge Development LLC and contributors
+ * Copyright (c) Forge Development LLC
  * SPDX-License-Identifier: LGPL-2.1-only
  */
-
 package net.minecraftforge.util.data.json;
 
 public class Config {

json-data-utils/src/main/java/net/minecraftforge/util/data/json/MCPConfig.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) Forge Development LLC and contributors
+ * Copyright (c) Forge Development LLC
  * SPDX-License-Identifier: LGPL-2.1-only
  */
 package net.minecraftforge.util.data.json;
@@ -36,17 +36,17 @@ public Function getFunction(String name) {
     }
 
     public List<Map<String, String>> getSteps(String side) {
-        var ret = this.steps == null ? null : this.steps.get(side);
+        List<Map<String, String>> ret = this.steps == null ? null : this.steps.get(side);
         return ret == null ? Collections.emptyList() : ret;
     }
 
-    public record Function(
-        String version,
-        String repo,
-        List<String> args,
-        List<String> jvmargs,
-        Integer java_version
-    ) {
+    public static final class Function {
+        public String version;
+        public String repo;
+        public List<String> args;
+        public List<String> jvmargs;
+        public Integer java_version;
+
         public int getJavaVersion(V2 parent) {
             return java_version == null ? parent.java_target : java_version;
         }

json-data-utils/src/main/java/net/minecraftforge/util/data/json/PatcherConfig.java

@@ -1,11 +1,9 @@
 /*
- * Copyright (c) Forge Development LLC and contributors
+ * Copyright (c) Forge Development LLC
  * SPDX-License-Identifier: LGPL-2.1-only
  */
 package net.minecraftforge.util.data.json;
 
-import net.minecraftforge.mcmaven.impl.util.Artifact;
-
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;

json-data-utils/src/main/java/net/minecraftforge/util/data/json/PromosSlim.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) Forge Development LLC and contributors
+ * Copyright (c) Forge Development LLC
  * SPDX-License-Identifier: LGPL-2.1-only
  */
 package net.minecraftforge.util.data.json;

json-data-utils/src/main/java/net/minecraftforge/util/data/json/RunConfig.java

@@ -1,3 +1,7 @@
+/*
+ * Copyright (c) Forge Development LLC
+ * SPDX-License-Identifier: LGPL-2.1-only
+ */
 package net.minecraftforge.util.data.json;
 
 import java.util.List;