remove unused dependencies

server/Cargo.toml

@@ -8,8 +8,6 @@ authors = ["Sergey <me@sergeysav.com>"]
 [dependencies]
 fern = "0.7.1"
 log = "0.4.29"
-prost = "0.13.5"
-rand = "0.9.0"
 tonic = { version = "0.12.3" }
 tokio = { version = "1.43.0", features = ["rt-multi-thread", "signal", "fs"] }
 chrono = "0.4.42"
@@ -18,7 +16,6 @@ actix-ws = "0.3.0"
 tokio-util = "0.7.17"
 serde = { version = "1.0.228", features = ["derive"] }
 serde_json = "1.0.145"
-hex = "0.4.3"
 papaya = "0.2.3"
 thiserror = "2.0.17"
 derive_more = { version = "2.1.0", features = ["from"] }
@@ -26,6 +23,3 @@ anyhow = "1.0.100"
 sqlx = { version = "0.8.6", features = [ "runtime-tokio", "tls-native-tls", "sqlite" ] }
 uuid = { version = "1.19.0", features = ["v4"] }
 api = { path = "../api" }
-
-[build-dependencies]
-tonic-build = "0.12.3"