Revert "Merge pull request swiftlang#26664 from rintaro/syntaxparse-memoryleak"

This reverts commit 9f6b3e2, reversing
changes made to e3e01cb.

Author: rintaro

lib/Parse/SyntaxParsingContext.cpp

@@ -259,13 +259,10 @@ ParsedRawSyntaxNode SyntaxParsingContext::finalizeSourceFile() {
   Parts = Parts.drop_back();
 
   for (auto RawNode : Parts) {
-    if (RawNode.getKind() != SyntaxKind::CodeBlockItem) {
+    if (RawNode.getKind() != SyntaxKind::CodeBlockItem)
       // FIXME: Skip toplevel garbage nodes for now. we shouldn't emit them in
       // the first place.
-      if (RawNode.isRecorded())
-        getSyntaxCreator().finalizeNode(RawNode.getOpaqueNode());
       continue;
-    }
 
     AllTopLevel.push_back(RawNode);
   }