[PATCH] rust: zerocopy-derive: Remove the BoolExt trait

FIXME comment was saying that this needed to
be removed once the MSRV >= 1.62.
The current MSRV is 1.85.0 obtained by using:
`scripts/min-tool-version.sh rustc` command.

Signed-off-by: Elouan Da Costa Peixoto <[email protected]>
---
 rust/zerocopy-derive/util.rs | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/rust/zerocopy-derive/util.rs b/rust/zerocopy-derive/util.rs
index 5c5e9d3bdcb8..47aa9f78bd4a 100644
--- a/rust/zerocopy-derive/util.rs
+++ b/rust/zerocopy-derive/util.rs
@@ -713,22 +713,6 @@ fn only_derive_is_allowed_to_implement_this_trait() {}
 // The `#[allow(unused)]` is necessary because, on sufficiently recent toolchain
 // versions, `b.then_some(...)` resolves to the inherent method rather than to
 // this trait, and so this trait is considered unused.
-//
-// FIXME(#67): Remove this once our MSRV is >= 1.62.
-#[allow(unused)]
-trait BoolExt {
-    fn then_some<T>(self, t: T) -> Option<T>;
-}
-
-impl BoolExt for bool {
-    fn then_some<T>(self, t: T) -> Option<T> {
-        if self {
-            Some(t)
-        } else {
-            None
-        }
-    }
-}
 
 pub(crate) fn const_block(items: impl IntoIterator<Item = Option<TokenStream>>) -> TokenStream {
     let items = items.into_iter().flatten();
-- 
2.55.0