Revert "GMO for BG"

This reverts commit 5b84f11f80.

src/frontends/qt4/GuiView.cpp

@@ -305,26 +305,6 @@ typedef map<string, GuiToolbar *> ToolbarMap;
 
 typedef shared_ptr<Dialog> DialogPtr;
 
-
-// see https://wiki.qt.io/Clickable_QLabel
-class QClickableLabel : public QLabel {
-	Q_OBJECT
-public:
-	explicit QClickableLabel(QWidget * parent)
-		: QLabel(parent)
-	{}
-
-	~QClickableLabel() {}
-
-Q_SIGNALS:
-	void clicked();
-
-protected:
-	void mousePressEvent(QMouseEvent *) {
-		Q_EMIT clicked();
-	}
-};
-
 } // namespace
 
 
@@ -630,7 +610,7 @@ GuiView::GuiView(int id)
 	setAcceptDrops(true);
 
 	// add busy indicator to statusbar
-	QClickableLabel * busylabel = new QClickableLabel(statusBar());
+	QLabel * busylabel = new QLabel(statusBar());
 	statusBar()->addPermanentWidget(busylabel);
 	search_mode mode = theGuiApp()->imageSearchMode();
 	QString fn = toqstr(lyx::libFileSearch("images", "busy", "gif", mode).absFileName());
@@ -643,7 +623,6 @@ GuiView::GuiView(int id)
 		busylabel, SLOT(show()));
 	connect(&d.processing_thread_watcher_, SIGNAL(finished()),
 		busylabel, SLOT(hide()));
-	connect(busylabel, SIGNAL(clicked()), this, SLOT(checkKillBackground()));
 
 	QFontMetrics const fm(statusBar()->fontMetrics());
 	int const iconheight = max(int(d.normalIconSize), fm.height());
@@ -734,17 +713,6 @@ void GuiView::disableShellEscape()
 }
 
 
-void GuiView::checkKillBackground()
-{
-	docstring const ttl = _("Cancel background process?");
-	docstring const msg = _("Do you want to cancel the background export process?");
-	const int decision =
-		Alert::prompt(ttl, msg, 1, 1, _("&Cancel Export"), _("Conti&nue"));
-	if (decision == 0)
-		Systemcall::killscript();
-}
-
-
 QVector<GuiWorkArea*> GuiView::GuiViewPrivate::guiWorkAreas()
 {
 	QVector<GuiWorkArea*> areas;

src/frontends/qt4/GuiView.h

@@ -231,8 +231,6 @@ public Q_SLOTS:
 	void updateWindowTitle(GuiWorkArea * wa);
 	///
 	void disableShellEscape();
-	///
-	void checkKillBackground();
 
 private Q_SLOTS:
 	///

src/frontends/qt4/Makefile.am

@@ -197,7 +197,6 @@ MOCHEADER = \
 	GuiChanges.h \
 	GuiCharacter.h \
 	GuiCitation.h \
-	GuiClickableLabel.h \
 	GuiClipboard.h \
 	GuiCommandBuffer.h \
 	GuiCommandEdit.h \