[LyX/master] Remove two remaining snippets from the QRegExp era.

[Scott Kostyshak]

On Sun, Mar 12, 2023 at 01:16:10PM +0100, Jean-Marc Lasgouttes wrote:
> Le 11/03/2023 à 23:14, Jean-Marc Lasgouttes a écrit :
> > Le 11/03/2023 à 23:01, Scott Kostyshak a écrit :
> > > I see, so my system is not recommended but it seems this issue
> > > should be fixed for someone with Qt 5.6.
> > 
> > I'll do that ASAP.
> 
> Is it better now?

Yes, compiles now. Thanks for the quick fix!

Scott
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