docs: fix docs.rs build by removing removed features (#1480)

docs: remove removed docsrs features that caused docs build to fail

Author: ok-nick

sdk/src/lib.rs

@@ -14,7 +14,7 @@
 #![deny(clippy::expect_used)]
 #![deny(clippy::panic)]
 #![deny(clippy::unwrap_used)]
-#![cfg_attr(docsrs, feature(doc_cfg, doc_auto_cfg, doc_cfg_hide))]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 //! This library supports reading, creating, and embedding C2PA data
 //! for a variety of asset types.