Remove unused FnDefFlag structs

Author: nathanwhit

chalk-integration/src/lowering.rs

@@ -940,12 +940,9 @@ impl LowerFnDefn for FnDefn {
             })
         })?;
 
-        let flags = rust_ir::FnDefFlags {};
-
         Ok(rust_ir::FnDefDatum {
             id: fn_def_id,
             binders,
-            flags,
         })
     }
 }

chalk-parse/src/ast.rs

@@ -50,12 +50,8 @@ pub struct FnDefn {
     pub where_clauses: Vec<QuantifiedWhereClause>,
     pub argument_types: Vec<Ty>,
     pub return_type: Ty,
-    pub flags: FnDefFlags,
 }
 
-#[derive(Clone, PartialEq, Eq, Debug)]
-pub struct FnDefFlags {}
-
 #[derive(Clone, PartialEq, Eq, Debug)]
 pub struct TraitDefn {
     pub name: Identifier,

chalk-parse/src/parser.lalrpop

@@ -81,8 +81,6 @@ FnDefn: FnDefn = {
         where_clauses: w,
         argument_types: args,
         return_type: ret_ty.unwrap_or_else(|| Ty::Tuple { types: Vec::new() }),
-        flags: FnDefFlags {
-        },
     }
 };
 

chalk-rust-ir/src/lib.rs

@@ -107,7 +107,6 @@ pub struct AdtFlags {
 pub struct FnDefDatum<I: Interner> {
     pub id: FnDefId<I>,
     pub binders: Binders<FnDefDatumBound<I>>,
-    pub flags: FnDefFlags,
 }
 
 #[derive(Clone, Debug, PartialEq, Eq, Hash, Fold, HasInterner)]
@@ -117,9 +116,6 @@ pub struct FnDefDatumBound<I: Interner> {
     pub where_clauses: Vec<QuantifiedWhereClause<I>>,
 }
 
-#[derive(Clone, Debug, PartialEq, Eq, Hash)]
-pub struct FnDefFlags {}
-
 #[derive(Clone, Debug, PartialEq, Eq, Hash)]
 /// A rust intermediate representation (rust_ir) of a Trait Definition. For
 /// example, given the following rust code: