Remove the wasmtime feature flag (#12684)

* Remove the `wasmtime` feature flag

* rustfmt

substrate/bin/node/executor/Cargo.toml

@@ -46,7 +46,6 @@ sp-keyring = { version = "7.0.0", path = "../../../primitives/keyring" }
 sp-runtime = { version = "7.0.0", path = "../../../primitives/runtime" }
 
 [features]
-wasmtime = ["sc-executor/wasmtime"]
 stress-test = []
 
 [[bench]]

substrate/bin/node/executor/benches/bench.rs

@@ -25,9 +25,10 @@ use kitchensink_runtime::{
 use node_executor::ExecutorDispatch;
 use node_primitives::{BlockNumber, Hash};
 use node_testing::keyring::*;
-#[cfg(feature = "wasmtime")]
-use sc_executor::WasmtimeInstantiationStrategy;
-use sc_executor::{Externalities, NativeElseWasmExecutor, RuntimeVersionOf, WasmExecutionMethod};
+use sc_executor::{
+	Externalities, NativeElseWasmExecutor, RuntimeVersionOf, WasmExecutionMethod,
+	WasmtimeInstantiationStrategy,
+};
 use sp_core::{
 	storage::well_known_keys,
 	traits::{CodeExecutor, RuntimeCode},
@@ -161,7 +162,6 @@ fn bench_execute_block(c: &mut Criterion) {
 	let execution_methods = vec![
 		ExecutionMethod::Native,
 		ExecutionMethod::Wasm(WasmExecutionMethod::Interpreted),
-		#[cfg(feature = "wasmtime")]
 		ExecutionMethod::Wasm(WasmExecutionMethod::Compiled {
 			instantiation_strategy: WasmtimeInstantiationStrategy::PoolingCopyOnWrite,
 		}),