[LyX/master] Revert UI fix for two digit numbers. It actually does not work.

[Pavel Sanda]

commit 2e32e2c1239fcb966f9eefc7926edf602b2ad9d8
Author: Pavel Sanda <sanda at lyx.org>
Date:   Fri Aug 25 18:52:27 2023 +0200

    Revert UI fix for two digit numbers. It actually does not work.
    
    https://www.mail-archive.com/lyx-devel@lists.lyx.org/msg220179.html
---
 src/frontends/qt/ui/PrefUi.ui |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/frontends/qt/ui/PrefUi.ui b/src/frontends/qt/ui/PrefUi.ui
index dceee5c..d7551cb 100644
--- a/src/frontends/qt/ui/PrefUi.ui
+++ b/src/frontends/qt/ui/PrefUi.ui
@@ -164,7 +164,7 @@
         <item>
          <widget class="QSpinBox" name="lastfilesSB">
           <property name="maximum">
-           <number>99</number>
+           <number>9</number>
           </property>
          </widget>
         </item>