TBDGen: Remove use of AbstractFunctionDecl::getParameterLists()

Author: slavapestov

lib/TBDGen/TBDGen.cpp

@@ -141,17 +141,10 @@ void TBDGenVisitor::visitAbstractFunctionDecl(AbstractFunctionDecl *AFD) {
   // functions) are public symbols, as the default values are computed at the
   // call site.
   auto index = 0;
-  auto paramLists = AFD->getParameterLists();
-  // Skip the first arguments, which contains Self (etc.), can't be defaulted,
-  // and are ignored for the purposes of default argument indices.
-  if (AFD->getDeclContext()->isTypeContext())
-    paramLists = paramLists.slice(1);
-  for (auto *paramList : paramLists) {
-    for (auto *param : *paramList) {
-      if (param->getDefaultValue())
-        addSymbol(SILDeclRef::getDefaultArgGenerator(AFD, index));
-      index++;
-    }
+  for (auto *param : *AFD->getParameters()) {
+    if (param->getDefaultValue())
+      addSymbol(SILDeclRef::getDefaultArgGenerator(AFD, index));
+    index++;
   }
 }