remove useless trait

crates/ra_syntax/src/ast/generated.rs

@@ -3134,8 +3134,11 @@ impl AstNode for TryBlockExpr {
         &self.syntax
     }
 }
-impl ast::TryBlockBodyOwner for TryBlockExpr {}
-impl TryBlockExpr {}
+impl TryBlockExpr {
+    pub fn block(&self) -> Option<Block> {
+        AstChildren::new(&self.syntax).next()
+    }
+}
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct TryExpr {
     pub(crate) syntax: SyntaxNode,

crates/ra_syntax/src/ast/traits.rs

@@ -33,12 +33,6 @@ pub trait LoopBodyOwner: AstNode {
     }
 }
 
-pub trait TryBlockBodyOwner: AstNode {
-    fn try_body(&self) -> Option<ast::Block> {
-        child_opt(self)
-    }
-}
-
 pub trait ArgListOwner: AstNode {
     fn arg_list(&self) -> Option<ast::ArgList> {
         child_opt(self)

crates/ra_syntax/src/grammar.ron

@@ -426,7 +426,7 @@ Grammar(
             traits: ["LoopBodyOwner"],
         ),
         "TryBlockExpr": (
-            traits: ["TryBlockBodyOwner"],
+            options: ["Block"],
         ),
         "ForExpr": (
             traits: ["LoopBodyOwner"],