rt: Remove threaded_scheduler() and basic_scheduler() (#2876)

Co-authored-by: Alice Ryhl <[email protected]>
Co-authored-by: Carl Lerche <[email protected]>

tests-integration/tests/macros_main.rs

@@ -1,4 +1,4 @@
-#![cfg(feature = "macros")]
+#![cfg(all(feature = "macros", feature = "rt-core"))]
 
 #[tokio::main]
 async fn basic_main() -> usize {
@@ -10,18 +10,15 @@ async fn generic_fun<T: Default>() -> T {
     T::default()
 }
 
-#[cfg(feature = "rt-core")]
-mod spawn {
-    #[tokio::main]
-    async fn spawning() -> usize {
-        let join = tokio::spawn(async { 1 });
-        join.await.unwrap()
-    }
+#[tokio::main]
+async fn spawning() -> usize {
+    let join = tokio::spawn(async { 1 });
+    join.await.unwrap()
+}
 
-    #[test]
-    fn main_with_spawn() {
-        assert_eq!(1, spawning());
-    }
+#[test]
+fn main_with_spawn() {
+    assert_eq!(1, spawning());
 }
 
 #[test]

tests-integration/tests/rt_shell.rs

@@ -1,32 +0,0 @@
-#![warn(rust_2018_idioms)]
-#![cfg(feature = "sync")]
-
-use tokio::runtime;
-use tokio::sync::oneshot;
-
-use std::sync::mpsc;
-use std::thread;
-
-#[test]
-fn basic_shell_rt() {
-    let (feed_tx, feed_rx) = mpsc::channel::<oneshot::Sender<()>>();
-
-    let th = thread::spawn(move || {
-        for tx in feed_rx.iter() {
-            tx.send(()).unwrap();
-        }
-    });
-
-    for _ in 0..1_000 {
-        let rt = runtime::Builder::new().build().unwrap();
-
-        let (tx, rx) = oneshot::channel();
-
-        feed_tx.send(tx).unwrap();
-
-        rt.block_on(rx).unwrap();
-    }
-
-    drop(feed_tx);
-    th.join().unwrap();
-}