[gnome-builder/wip/gtk4-port] libide/gui: remove IdePanel

[Christian Hergert <chergert src gnome org>]

commit 161e88778c6c9b7ac2f8b5c2e2ae80f8f1805c96
Author: Christian Hergert <chergert redhat com>
Date:   Mon Mar 28 18:58:07 2022 -0700

    libide/gui: remove IdePanel
    
    In libpanel, these widgets can't be created, so you have to get the child
    from the PanelDock directly by position.

 src/libide/gui/ide-panel.c              | 85 ---------------------------------
 src/libide/gui/ide-panel.h              | 48 -------------------
 src/libide/gui/ide-panel.ui             | 13 -----
 src/libide/gui/libide-gui.gresource.xml |  1 -
 src/libide/gui/libide-gui.h             |  1 -
 src/libide/gui/meson.build              |  2 -
 6 files changed, 150 deletions(-)
---
diff --git a/src/libide/gui/libide-gui.gresource.xml b/src/libide/gui/libide-gui.gresource.xml
index a5e4b1246..79855ed83 100644
--- a/src/libide/gui/libide-gui.gresource.xml
+++ b/src/libide/gui/libide-gui.gresource.xml
@@ -13,7 +13,6 @@
     <file preprocess="xml-stripblanks">ide-notification-view.ui</file>
     <file preprocess="xml-stripblanks">ide-notifications-button.ui</file>
     <file preprocess="xml-stripblanks">ide-omni-bar.ui</file>
-    <file preprocess="xml-stripblanks">ide-panel.ui</file>
     <file preprocess="xml-stripblanks">ide-preferences-window.ui</file>
     <file preprocess="xml-stripblanks">ide-primary-workspace.ui</file>
     <file preprocess="xml-stripblanks">ide-run-button.ui</file>
diff --git a/src/libide/gui/libide-gui.h b/src/libide/gui/libide-gui.h
index 4695ab6d7..b150afafc 100644
--- a/src/libide/gui/libide-gui.h
+++ b/src/libide/gui/libide-gui.h
@@ -44,7 +44,6 @@
 #include "ide-omni-bar.h"
 #include "ide-page.h"
 #include "ide-pane.h"
-#include "ide-panel.h"
 #include "ide-preferences-addin.h"
 #include "ide-preferences-surface.h"
 #include "ide-preferences-window.h"
diff --git a/src/libide/gui/meson.build b/src/libide/gui/meson.build
index 3a82a8b16..46a3418b7 100644
--- a/src/libide/gui/meson.build
+++ b/src/libide/gui/meson.build
@@ -21,7 +21,6 @@ libide_gui_public_headers = [
   'ide-omni-bar.h',
   'ide-page.h',
   'ide-pane.h',
-  'ide-panel.h',
   'ide-preferences-addin.h',
   'ide-preferences-window.h',
   'ide-primary-workspace.h',
@@ -94,7 +93,6 @@ libide_gui_public_sources = [
   'ide-omni-bar.c',
   'ide-page.c',
   'ide-pane.c',
-  'ide-panel.c',
   'ide-primary-workspace.c',
   'ide-preferences-addin.c',
   'ide-preferences-window.c',