Remove dependency on proc-macro-crate

This dependency is only useful when modifying the crate name of
`num_enum` crate. RustPython doesn't do that so it's unnecessary.

Cargo.lock

@@ -1419,15 +1419,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "nom8"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae01545c9c7fc4486ab7debaf2aad7003ac19431791868fb2e8066df97fad2f8"
-dependencies = [
- "memchr",
-]
-
 [[package]]
 name = "num-complex"
 version = "0.4.3"
@@ -1481,7 +1472,6 @@ version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "681030a937600a36906c185595136d26abfebb4aa9c65701cefcaf8578bb982b"
 dependencies = [
- "proc-macro-crate",
  "proc-macro2",
  "quote",
  "syn 2.0.32",
@@ -1698,16 +1688,6 @@ version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
 
-[[package]]
-name = "proc-macro-crate"
-version = "1.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "66618389e4ec1c7afe67d51a9bf34ff9236480f8d51e7489b7d5ab0303c13f34"
-dependencies = [
- "once_cell",
- "toml_edit",
-]
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.79"
@@ -2795,23 +2775,6 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
-[[package]]
-name = "toml_datetime"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4553f467ac8e3d374bc9a177a26801e5d0f9b211aa1673fb137a403afd1c9cf5"
-
-[[package]]
-name = "toml_edit"
-version = "0.18.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "56c59d8dd7d0dcbc6428bf7aa2f0e823e26e43b3c9aca15bbc9475d23e5fa12b"
-dependencies = [
- "indexmap 1.9.3",
- "nom8",
- "toml_datetime",
-]
-
 [[package]]
 name = "twox-hash"
 version = "1.6.3"

Cargo.toml

@@ -166,7 +166,7 @@ memchr = "2.7.2"
 num-complex = "0.4.0"
 num-integer = "0.1.44"
 num-traits = "0.2"
-num_enum = "0.7"
+num_enum = { version = "0.7", default-features = false }
 once_cell = "1.19.0"
 parking_lot = "0.12.1"
 paste = "1.0.7"