Remove num_enum dependency.

It is unused.

Author: rbartlensky

Cargo.lock

@@ -27,7 +27,6 @@ vendored = ["libbpf-sys/vendored"]
 bitflags = "2.0"
 libbpf-sys = { version = "1.4.1", default-features = false }
 libc = "0.2"
-num_enum = "0.5"
 strum_macros = "0.24"
 vsprintf = "2.0"