remove pool tsan test

tsan does not support the 32-bit x86 targets

Author: japaric

.github/workflows/build.yml

@@ -250,8 +250,6 @@ jobs:
           - x86_64-unknown-linux-gnu
         toolchain:
           - nightly
-        features:
-          - x86-sync-pool
         buildtype:
           - ""
           - "--release"

tests/tsan.rs

@@ -241,35 +241,3 @@ fn iterator_properly_wraps() {
     }
     assert_eq!(expected, actual)
 }
-
-#[cfg(all(target_arch = "x86_64", feature = "x86-sync-pool"))]
-#[test]
-fn pool() {
-    use heapless::pool::singleton::Pool as _;
-
-    static mut M: [u8; (N + 1) * 8] = [0; (N + 1) * 8];
-    const N: usize = 16 * 1024;
-    heapless::pool!(A: [u8; 8]);
-
-    A::grow(unsafe { &mut M });
-
-    thread::scope(move |scope| {
-        scope.spawn(move || {
-            for _ in 0..N / 4 {
-                let a = A::alloc().unwrap();
-                let b = A::alloc().unwrap();
-                drop(a);
-                let b = b.init([1; 8]);
-                drop(b);
-            }
-        });
-
-        scope.spawn(move || {
-            for _ in 0..N / 2 {
-                let a = A::alloc().unwrap();
-                let a = a.init([2; 8]);
-                drop(a);
-            }
-        });
-    });
-}