Sema: Remove a couple of TypeChecker methods that are no longer used outside of TypeCheckGeneric.cpp

Author: slavapestov

lib/Sema/TypeCheckGeneric.cpp

@@ -576,7 +576,7 @@ static bool checkGenericFuncSignature(TypeChecker &tc,
   return badType;
 }
 
-void TypeChecker::revertGenericFuncSignature(AbstractFunctionDecl *func) {
+static void revertGenericFuncSignature(AbstractFunctionDecl *func) {
   // Revert the result type.
   if (auto fn = dyn_cast<FuncDecl>(func))
     if (!fn->getBodyResultTypeLoc().isNull())
@@ -1047,7 +1047,7 @@ static bool checkGenericSubscriptSignature(TypeChecker &tc,
   return badType;
 }
 
-void TypeChecker::revertGenericSubscriptSignature(SubscriptDecl *subscript) {
+static void revertGenericSubscriptSignature(SubscriptDecl *subscript) {
   // Revert the element type.
   if (!subscript->getElementTypeLoc().isNull())
     revertDependentTypeLoc(subscript->getElementTypeLoc());

lib/Sema/TypeChecker.h

@@ -1278,11 +1278,6 @@ class TypeChecker final : public LazyResolver {
   /// of a generic function.
   void validateGenericFuncSignature(AbstractFunctionDecl *func);
 
-  /// Revert the signature of a generic function to its pre-type-checked state,
-  /// so that it can be type checked again when we have resolved its generic
-  /// parameters.
-  void revertGenericFuncSignature(AbstractFunctionDecl *func);
-
   /// Check the generic parameters in the given generic parameter list (and its
   /// parent generic parameter lists) according to the given resolver.
   void checkGenericParamList(GenericSignatureBuilder *builder,
@@ -1294,11 +1289,6 @@ class TypeChecker final : public LazyResolver {
   /// of a generic subscript.
   void validateGenericSubscriptSignature(SubscriptDecl *subscript);
 
-  /// Revert the signature of a generic function to its pre-type-checked state,
-  /// so that it can be type checked again when we have resolved its generic
-  /// parameters.
-  void revertGenericSubscriptSignature(SubscriptDecl *subscript);
-
   /// Configure the interface type of a subscript declaration.
   void configureInterfaceType(SubscriptDecl *subscript,
                               GenericSignature *sig);