Remove invalid target-specific dependency example.
Remove invalid target-specific dependency example.

eminence/cargo,rust-lang/cargo,nipunn1313/cargo,nipunn1313/cargo,rustyhorde/cargo,rust-lang/cargo,eminence/cargo,nipunn1313/cargo,rustyhorde/cargo,rustyhorde/cargo,nipunn1313/cargo,rust-lang/cargo,rustyhorde/cargo,eminence/cargo,rust-lang/cargo,eminence/cargo