fix(app): scope pause-sorting PR to issue ScanTailor-Advanced#86 only

Remove two-page spread order menu action and handler that belong
in the P0 bundle (ScanTailor-Advanced#133 / ScanTailor-Advanced#62). Fixes CI build after rebase on master.

Author: pablogventura

src/app/MainWindow.cpp

@@ -308,7 +308,6 @@ MainWindow::MainWindow()
   });
 
   connect(actionFixDpi, SIGNAL(triggered(bool)), SLOT(fixDpiDialogRequested()));
-  connect(actionReverseTwoPageOrder, SIGNAL(triggered(bool)), SLOT(toggleTwoPageSpreadReadingOrder()));
   connect(actionRelinking, SIGNAL(triggered(bool)), SLOT(showRelinkingDialog()));
 #ifdef ENABLE_DEBUG_FEATURES
   connect(actionDebug, SIGNAL(toggled(bool)), SLOT(debugToggled(bool)));
@@ -1053,18 +1052,6 @@ void MainWindow::pageContextMenuRequested(const PageInfo& pageInfo_, const QPoin
   }
 }  // MainWindow::pageContextMenuRequested
 
-void MainWindow::toggleTwoPageSpreadReadingOrder() {
-  if (!isProjectLoaded() || !m_pages) {
-    return;
-  }
-  const Qt::LayoutDirection nextDir
-      = (m_pages->layoutDirection() == Qt::LeftToRight) ? Qt::RightToLeft : Qt::LeftToRight;
-  m_pages->setLayoutDirection(nextDir);
-  m_outFileNameGen.setLayoutDirection(nextDir);
-  resetThumbSequence(currentPageOrderProvider(), ThumbnailSequence::KEEP_SELECTION);
-  invalidateAllThumbnails();
-}
-
 void MainWindow::pastLastPageContextMenuRequested(const QPoint& screenPos) {
   if (!isProjectLoaded()) {
     return;
@@ -1608,7 +1595,6 @@ void MainWindow::updateProjectActions() {
   actionSaveProjectAs->setEnabled(loaded);
   actionFixDpi->setEnabled(loaded);
   actionRelinking->setEnabled(loaded);
-  actionReverseTwoPageOrder->setEnabled(loaded);
 }
 
 bool MainWindow::isBatchProcessingInProgress() const {

src/app/MainWindow.ui

@@ -75,7 +75,6 @@
     </widget>
     <addaction name="actionFixDpi"/>
     <addaction name="actionRelinking"/>
-    <addaction name="actionReverseTwoPageOrder"/>
     <addaction name="separator"/>
     <addaction name="actionDebug"/>
     <addaction name="separator"/>
@@ -1271,20 +1270,6 @@ QToolButton:pressed {
     <bool>false</bool>
    </property>
   </action>
-  <action name="actionReverseTwoPageOrder">
-   <property name="text">
-    <string>Reverse two-page spread order</string>
-   </property>
-   <property name="toolTip">
-    <string>Swap left/right page order for two-page scans (e.g. Japanese book reading order).</string>
-   </property>
-   <property name="shortcut">
-    <string notr="true"/>
-   </property>
-   <property name="autoRepeat">
-    <bool>false</bool>
-   </property>
-  </action>
   <action name="actionSwitchFilter1">
    <property name="text">
     <string>Switch filter to orientation</string>