Do not store `requested_features` in FeatureResolver.
Do not store `requested_features` in FeatureResolver.

This isn't really needed "globally", just at the beginning.

tsurai/cargo,nipunn1313/cargo,tsurai/cargo,rustyhorde/cargo,rust-lang/cargo,eminence/cargo,eminence/cargo,rust-lang/cargo,tshepang/cargo,tsurai/cargo,vojtechkral/cargo,nipunn1313/cargo,tshepang/cargo,rustyhorde/cargo,rust-lang/cargo,nipunn1313/cargo,vojtechkral/cargo,tsurai/cargo,tsurai/cargo,tshepang/cargo,nipunn1313/cargo,rust-lang/cargo,eminence/cargo,vojtechkral/cargo,rustyhorde/cargo,rustyhorde/cargo,vojtechkral/cargo,tshepang/cargo,eminence/cargo