Disable hostperfcheck by default (#6640)

This feature should only be activated by the polkadot binary. Otherwise
parachains may accidentally activate this feature.

polkadot/node/test/performance-test/src/lib.rs

@@ -36,9 +36,6 @@ pub enum PerfCheckError {
 	#[error("This subcommand is only available in release mode")]
 	WrongBuildType,
 
-	#[error("This subcommand is only available when compiled with `{feature}`")]
-	FeatureNotEnabled { feature: &'static str },
-
 	#[error("No wasm code found for running the performance test")]
 	WasmBinaryMissing,