fix: remove unused dependencies failing cargo machete

Cargo.lock

@@ -3418,7 +3418,6 @@ dependencies = [
  "ecdsa 0.17.0",
  "md5",
  "p384 0.14.0",
- "pumpkin-util",
  "reqwest",
  "rsa",
  "rustls",
@@ -3622,7 +3621,6 @@ dependencies = [
  "thiserror 2.0.20",
  "tokio",
  "uuid",
- "xxhash-rust",
 ]
 
 [[package]]

crates/pumpkin-auth/Cargo.toml

@@ -6,8 +6,6 @@ rust-version.workspace = true
 license.workspace = true
 
 [dependencies]
-pumpkin-util.workspace = true
-
 serde.workspace = true
 serde_json.workspace = true
 thiserror.workspace = true

crates/pumpkin-protocol/Cargo.toml

@@ -36,7 +36,6 @@ flate2.workspace = true
 
 bitflags.workspace = true
 base64.workspace = true
-xxhash-rust.workspace = true
 
 [dev-dependencies]
 tokio = { workspace = true, features = ["macros", "rt-multi-thread"] }