Update expr.rs

Revert spurious changes included in PR

compiler/rustc_typeck/src/check/expr.rs

@@ -865,22 +865,14 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                         ),
                     ..
                 }) => {
-                    // Check if our lhs is a child of the condition of a while loop
-                    let expr_is_ancestor = std::iter::successors(Some(lhs.hir_id), |id| {
-                        self.tcx.hir().find_parent_node(*id)
-                    })
-                    .take_while(|id| *id != parent)
-                    .any(|id| id == expr.hir_id);
-                    // if it is, then we have a situation like `while Some(0) = value.get(0) {`,
-                    // where `while let` was more likely intended.
-                    if expr_is_ancestor {
-                        err.span_suggestion_verbose(
-                            expr.span.shrink_to_lo(),
-                            "you might have meant to use pattern destructuring",
-                            "let ".to_string(),
-                            Applicability::MachineApplicable,
-                        );
-                    }
+                    // We have a situation like `while Some(0) = value.get(0) {`, where `while let`
+                    // was more likely intended.
+                    err.span_suggestion_verbose(
+                        expr.span.shrink_to_lo(),
+                        "you might have meant to use pattern destructuring",
+                        "let ".to_string(),
+                        Applicability::MachineApplicable,
+                    );
                     break;
                 }
                 hir::Node::Item(_)