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

[Scott Kostyshak]

On Sun, Mar 12, 2023 at 03:10:18PM +0100, Jean-Marc Lasgouttes wrote:
> Le 12/03/2023 à 14:49, Scott Kostyshak a écrit :
> > 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!
> 
> You are welcome. It is important that somebody checks that the old versions
> we claim to support are supported.

I agree, but I do not accept this responsibility :). I will upgrade this
system very soon. Ideally we would set this up with CI compilation tests.

> What system is this?

Ubuntu version: 16.04
GCC version:    5.4.0
Qt version:     5.5.1

Scott
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