Remove unused build dependency

Author: Gianmarco Garrisi

Cargo.toml

@@ -12,9 +12,6 @@ license = "LGPL-3.0-or-later OR MPL-2.0"
 edition = "2021"
 rust-version = "1.65.0"
 
-[build-dependencies]
-autocfg = "1"
-
 [dependencies]
 equivalent = "1.0.1"
 indexmap = {version = "2.2", features = [], default-features = false}