vcl: remove inaccurate and misleading comment

Change-Id: I16d53d10f02736dda3202ac02b2a4909f53f19ab
Reviewed-on: https://gerrit.libreoffice.org/36860Reviewed-by: Chris Sherlock <chris.sherlock79@gmail.com>
Tested-by: Chris Sherlock <chris.sherlock79@gmail.com>

vcl/source/window/errinf.cxx

@@ -270,7 +270,7 @@ DialogMask ErrorHandler::HandleError(sal_uInt32 nErrCodeId, DialogMask nFlags)
     if (!rData.contexts.empty())
     {
         rData.contexts.front()->GetString(pInfo->GetErrorCode(), aAction);
-        // Remove parent from context
+
         for(ErrorContext *pCtx : rData.contexts)
         {
             if(pCtx->GetParent())