rust: alloc: remove our fork of the `alloc` crate

It is not used anymore as `VecExt` now provides the functionality we
depend on.

Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
Link: https://lore.kernel.org/r/20240328013603.206764-5-wedsonaf@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

1 files changed, 0 insertions, 35 deletions

diff --git a/rust/alloc/vec/set_len_on_drop.rs b/rust/alloc/vec/set_len_on_drop.rs
deleted file mode 100644
index d3c7297b80ec..000000000000
--- a/rust/alloc/vec/set_len_on_drop.rs
+++ /dev/null
@@ -1,35 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0 OR MIT
-
-// Set the length of the vec when the `SetLenOnDrop` value goes out of scope.
-//
-// The idea is: The length field in SetLenOnDrop is a local variable
-// that the optimizer will see does not alias with any stores through the Vec's data
-// pointer. This is a workaround for alias analysis issue #32155
-pub(super) struct SetLenOnDrop<'a> {
-    len: &'a mut usize,
-    local_len: usize,
-}
-
-impl<'a> SetLenOnDrop<'a> {
-    #[inline]
-    pub(super) fn new(len: &'a mut usize) -> Self {
-        SetLenOnDrop { local_len: *len, len }
-    }
-
-    #[inline]
-    pub(super) fn increment_len(&mut self, increment: usize) {
-        self.local_len += increment;
-    }
-
-    #[inline]
-    pub(super) fn current_len(&self) -> usize {
-        self.local_len
-    }
-}
-
-impl Drop for SetLenOnDrop<'_> {
-    #[inline]
-    fn drop(&mut self) {
-        *self.len = self.local_len;
-    }
-}