[gnome-builder/wip/gtk4-port: 127/343] libide/gui: remove transient sidebar

[Christian Hergert <chergert src gnome org>]

commit 21898a5c35b5b8784e5781e0f905d844277153bd
Author: Christian Hergert <chergert redhat com>
Date:   Tue Mar 29 01:42:06 2022 -0700

    libide/gui: remove transient sidebar
    
    We aren't using this with libpanel, so it can just go away.

 src/libide/gui/ide-transient-sidebar.c | 355 ---------------------------------
 src/libide/gui/ide-transient-sidebar.h |  58 ------
 src/libide/gui/libide-gui.h            |  51 +++--
 src/libide/gui/meson.build             |   2 -
 4 files changed, 24 insertions(+), 442 deletions(-)
---
diff --git a/src/libide/gui/libide-gui.h b/src/libide/gui/libide-gui.h
index fed603f1d..e2a2ebc37 100644
--- a/src/libide/gui/libide-gui.h
+++ b/src/libide/gui/libide-gui.h
@@ -29,31 +29,28 @@
 #include <libide-threading.h>
 
 #define IDE_GUI_INSIDE
-
-#include "ide-application.h"
-#include "ide-application-addin.h"
-#include "ide-config-view-addin.h"
-#include "ide-environment-editor.h"
-#include "ide-frame.h"
-#include "ide-frame-addin.h"
-#include "ide-header-bar.h"
-#include "ide-grid.h"
-#include "ide-gui-global.h"
-#include "ide-header-bar.h"
-#include "ide-marked-view.h"
-#include "ide-notifications-button.h"
-#include "ide-omni-bar-addin.h"
-#include "ide-omni-bar.h"
-#include "ide-page.h"
-#include "ide-pane.h"
-#include "ide-preferences-addin.h"
-#include "ide-preferences-window.h"
-#include "ide-primary-workspace.h"
-#include "ide-session-addin.h"
-#include "ide-transient-sidebar.h"
-#include "ide-workbench.h"
-#include "ide-workbench-addin.h"
-#include "ide-workspace.h"
-#include "ide-workspace-addin.h"
-
+# include "ide-application.h"
+# include "ide-application-addin.h"
+# include "ide-config-view-addin.h"
+# include "ide-environment-editor.h"
+# include "ide-frame.h"
+# include "ide-frame-addin.h"
+# include "ide-header-bar.h"
+# include "ide-grid.h"
+# include "ide-gui-global.h"
+# include "ide-header-bar.h"
+# include "ide-marked-view.h"
+# include "ide-notifications-button.h"
+# include "ide-omni-bar-addin.h"
+# include "ide-omni-bar.h"
+# include "ide-page.h"
+# include "ide-pane.h"
+# include "ide-preferences-addin.h"
+# include "ide-preferences-window.h"
+# include "ide-primary-workspace.h"
+# include "ide-session-addin.h"
+# include "ide-workbench.h"
+# include "ide-workbench-addin.h"
+# include "ide-workspace.h"
+# include "ide-workspace-addin.h"
 #undef IDE_GUI_INSIDE
diff --git a/src/libide/gui/meson.build b/src/libide/gui/meson.build
index d55772e02..7e3864f57 100644
--- a/src/libide/gui/meson.build
+++ b/src/libide/gui/meson.build
@@ -26,7 +26,6 @@ libide_gui_public_headers = [
   'ide-preferences-window.h',
   'ide-primary-workspace.h',
   'ide-session-addin.h',
-  'ide-transient-sidebar.h',
   'ide-workbench.h',
   'ide-workbench-addin.h',
   'ide-workspace.h',
@@ -91,7 +90,6 @@ libide_gui_public_sources = [
   'ide-preferences-addin.c',
   'ide-preferences-window.c',
   'ide-session-addin.c',
-  'ide-transient-sidebar.c',
   'ide-workbench.c',
   'ide-workbench-addin.c',
   'ide-workspace.c',