internal: remove deprecated method

Author: matklad

crates/ide_assists/src/handlers/replace_if_let_with_match.rs

@@ -253,7 +253,10 @@ fn pick_pattern_and_expr_order(
 
 fn is_empty_expr(expr: &ast::Expr) -> bool {
     match expr {
-        ast::Expr::BlockExpr(expr) => expr.is_empty(),
+        ast::Expr::BlockExpr(expr) => match expr.stmt_list() {
+            Some(it) => it.statements().next().is_none() && it.tail_expr().is_none(),
+            None => true,
+        },
         ast::Expr::TupleExpr(expr) => expr.fields().next().is_none(),
         _ => false,
     }

crates/syntax/src/ast/node_ext.rs

@@ -58,9 +58,6 @@ impl ast::BlockExpr {
         self.stmt_list().into_iter().flat_map(|it| it.items())
     }
 
-    pub fn is_empty(&self) -> bool {
-        self.statements().next().is_none() && self.tail_expr().is_none()
-    }
     pub fn statements(&self) -> impl Iterator<Item = ast::Stmt> {
         self.stmt_list().into_iter().flat_map(|it| it.statements())
     }