Remove checksum from skin upload metadata

src/main/java/com/minelittlepony/hdskins/server/ValhallaSkinServer.java

@@ -15,14 +15,12 @@
 import net.minecraft.network.chat.ClickEvent;
 import net.minecraft.network.chat.Component;
 import net.minecraft.util.CommonColors;
-import net.minecraft.util.Util;
 import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.http.HttpRequest;
 import java.time.Duration;
 import java.util.*;
-import java.util.function.Function;
 
 import org.jetbrains.annotations.Nullable;
 
@@ -151,7 +149,7 @@ public void uploadSkin(SkinUpload upload) throws IOException, AuthenticationExce
                     MoreHttpResponses.execute(FileTypes.multiPart()
                             .field("type", fileUpload.type().getParameterizedName())
                             .field("file", fileUpload.file())
-                            .field("meta", new Gson().toJson(addChecksum(fileUpload.metadata(), fileUpload.file().toUri())))
+                            .field("meta", new Gson().toJson(fileUpload.metadata()))
                             .build(builder.newHttpBuilder(buildBackendUri("textures"))::PUT)
                             .build())
                     .requireOk();
@@ -160,23 +158,14 @@ public void uploadSkin(SkinUpload upload) throws IOException, AuthenticationExce
                             .POST(FileTypes.json(Map.of(
                                 "type", uriUpload.type().getParameterizedName(),
                                 "file", uriUpload.uri().toString(),
-                                "meta", addChecksum(uriUpload.metadata(), uriUpload.uri())
+                                "meta", uriUpload.metadata()
                             )))
                             .header(FileTypes.HEADER_CONTENT_TYPE, FileTypes.APPLICATION_JSON)
                             .build())
                     .requireOk();
         });
     }
 
-    private Map<String, String> addChecksum(Map<String, String> metadata, URI uri) throws IOException {
-        if (metadata.containsKey("checksum")) {
-            return metadata;
-        }
-        metadata = new HashMap<>(metadata);
-        metadata.put("checksum", URIUtil.getChecksum(uri));
-        return Map.copyOf(metadata);
-    }
-
     @Override
     public void authorize(Session session) throws IOException, AuthenticationException {
         if (accessToken != null) {
@@ -203,19 +192,10 @@ public Optional<SkinServerProfile<?>> loadProfile(Session session) throws IOExce
         return doAuthorizedRequest(session, (builder) -> MoreHttpResponses.execute(builder.newHttpBuilder(buildBackendUri("history"))
                 .GET()
                 .build()).accept(r -> r.json(Textures.class, "Server sent invalid profile response")).map(p -> {
-            Function<SkinType, List<Texture>> textures = Util.memoize(type -> {
-                Set<String> visited = new HashSet<>();
-                return p.textures().getOrDefault(type, List.of())
-                        .stream()
-                        .filter(texture -> texture.metadata().containsKey("checksum"))
-                        .sorted(Comparator.comparing(t -> -t.startTime))
-                        .filter(texture -> visited.add(texture.metadata().get("checksum") + texture.getModel()))
-                        .toList();
-            });
             return new SkinServerProfile<Texture>() {
                 @Override
                 public List<Texture> getSkins(SkinType type) {
-                    return textures.apply(type);
+                    return p.textures().getOrDefault(type, List.of());
                 }
 
                 @Override

src/main/java/com/minelittlepony/hdskins/util/net/URIUtil.java

@@ -35,10 +35,6 @@ String toURIComponent() {
         }
     }
 
-    static String getChecksum(URI uri) throws IOException {
-        return Hashing.farmHashFingerprint64().hashBytes(getBytes(uri)).toString();
-    }
-
     static byte[] getBytes(URI uri) throws IOException {
         if ("file".equalsIgnoreCase(uri.getScheme())) {
             return Files.readAllBytes(Path.of(uri));