refactor: remove dead code (#3337)

fluxer_media_proxy/Cargo.toml

@@ -47,7 +47,6 @@ sha2 = "0.11.0"
 tempfile = "3.27.0"
 thiserror = "2.0.20"
 tokio = {version = "1.53.1", features = ["fs", "io-util", "macros", "net", "rt-multi-thread", "signal", "sync", "time"]}
-tokio-util = {version = "0.7.19", features = ["io"]}
 tower-http = {version = "0.7.1", features = ["compression-gzip"]}
 tracing = "0.1.44"
 tracing-subscriber = {version = "0.3.23", features = ["fmt", "json"]}