Rust: Remove redundant code.

Author: geoffw0

rust/extractor/src/translate/mappings.rs

@@ -63,37 +63,3 @@ impl TextValue for ast::RangePat {
         self.op_token().map(|x| x.text().to_string())
     }
 }
-
-pub trait PathAst: AstNode {
-    fn path(&self) -> Option<ast::Path>;
-}
-
-impl PathAst for ast::PathExpr {
-    fn path(&self) -> Option<ast::Path> {
-        self.path()
-    }
-}
-
-impl PathAst for ast::RecordExpr {
-    fn path(&self) -> Option<ast::Path> {
-        self.path()
-    }
-}
-
-impl PathAst for ast::PathPat {
-    fn path(&self) -> Option<ast::Path> {
-        self.path()
-    }
-}
-
-impl PathAst for ast::RecordPat {
-    fn path(&self) -> Option<ast::Path> {
-        self.path()
-    }
-}
-
-impl PathAst for ast::TupleStructPat {
-    fn path(&self) -> Option<ast::Path> {
-        self.path()
-    }
-}