Remove more unused AST setters

Bug: tint:390
Change-Id: Ia15414e73ba921c0880556f4d43af783f1d497ea
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/35005
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>

src/ast/array_accessor_expression.h

@@ -46,9 +46,6 @@ class ArrayAccessorExpression
   /// @returns the array
   Expression* array() const { return array_; }
 
-  /// Sets the index expression
-  /// @param idx_expr the index expression
-  void set_idx_expr(Expression* idx_expr) { idx_expr_ = idx_expr; }
   /// @returns the index expression
   Expression* idx_expr() const { return idx_expr_; }
 

src/ast/function.h

@@ -165,9 +165,6 @@ class Function : public Castable<Function, Node> {
   /// @returns true if `name` is an ancestor entry point of this function
   bool HasAncestorEntryPoint(const std::string& name) const;
 
-  /// Sets the return type of the function
-  /// @param type the return type
-  void set_return_type(type::Type* type) { return_type_ = type; }
   /// @returns the function return type.
   type::Type* return_type() const { return return_type_; }
   /// @returns a pointer to the last statement of the function or nullptr if

src/ast/sint_literal.h

@@ -31,9 +31,6 @@ class SintLiteral : public Castable<SintLiteral, IntLiteral> {
   SintLiteral(type::Type* type, int32_t value);
   ~SintLiteral() override;
 
-  /// Updates the literals value
-  /// @param val the value to set
-  void set_value(int32_t val) { value_ = val; }
   /// @returns the int literal value
   int32_t value() const { return value_; }
 

src/ast/struct.h

@@ -60,9 +60,6 @@ class Struct : public Castable<Struct, Node> {
   /// @returns the struct decorations
   const StructDecorationList& decorations() const { return decorations_; }
 
-  /// Sets the struct members
-  /// @param members the members to set
-  void set_members(StructMemberList members) { members_ = std::move(members); }
   /// @returns the members
   const StructMemberList& members() const { return members_; }
 

src/ast/uint_literal.h

@@ -31,9 +31,6 @@ class UintLiteral : public Castable<UintLiteral, IntLiteral> {
   UintLiteral(type::Type* type, uint32_t value);
   ~UintLiteral() override;
 
-  /// Updates the literals value
-  /// @param val the value to set
-  void set_value(uint32_t val) { value_ = val; }
   /// @returns the uint literal value
   uint32_t value() const { return value_; }