Some fixes to compile for Android (#1063)

* Some fixes to compile for Android

* Revert change to cli

polkadot/validation/src/lib.rs

@@ -53,7 +53,6 @@ pub use self::shared_table::{
 };
 pub use self::validation_service::{ServiceHandle, ServiceBuilder};
 
-#[cfg(not(target_os = "unknown"))]
 pub use parachain::wasm_executor::run_worker as run_validation_worker;
 
 mod dynamic_inclusion;