Remove unneeded prop

src/org/org_types.nim

@@ -110,7 +110,6 @@ type
       level*: int
       todo*: Option[string]
       headlineContent*: seq[OrgInlineBlock]
-      headlineChildrenText*: string
 
 ## OrgBlock.PrettyPrinters
 
@@ -120,7 +119,6 @@ func pprint*(x: OrgBlock, indent = 0): string =
     ("level", $x.level, true),
     ("todo", $x.todo, x.todo.isSome()),
     ("headlineContent", $x.headlineContent, x.headlineContent.len != 0),
-    ("headlineChildrenText", $x.headlineChildrenText, x.headlineChildrenText.len != 0),
     ("children", $x.children, x.children.len != 0),
   ]
   .stringifyFields()