message: Update tests/sled_storage.rs to use #![cfg..] global macro
diff: -#[cfg(feature = "sled-storage")]
  +#![cfg(feature = "sled-storage")]
  +
  use sled::IVec;
  -#[cfg(feature = "sled-storage")]
  use std::{cell::RefCell, convert::TryFrom, rc::Rc};
  -#[cfg(feature = "sled-storage")]
  use gluesql::{generate_alter_table_tests, generate_tests, sled, tests::*, SledStorage};
  -#[cfg(feature = "sled-storage")]
  struct SledTester {
  storage: Rc<RefCell<Option<SledStorage>>>,
  }
  -#[cfg(feature = "sled-storage")]
  impl Tester<IVec, SledStorage> for SledTester {
  fn new(namespace: &str) -> Self {
  let path = format!("data/{}", namespace);
  @@ -42,5 +39,4 @@ impl Tester<IVec, SledStorage> for SledTester {
  }
  }
  -#[cfg(feature = "sled-storage")]
  generate_tests!(tokio::test, SledTester);
  