Remove unused "output_interface.h" include

output_interface.h used to be included because of its output transform
enums. It's not needed after switching to Output::Transform.

src/wayland/autotests/client/test_wayland_surface.cpp

@@ -11,6 +11,7 @@
 #include "wayland/compositor_interface.h"
 #include "wayland/display.h"
 #include "wayland/idleinhibit_v1_interface.h"
+#include "wayland/output_interface.h"
 #include "wayland/shmclientbuffer.h"
 #include "wayland/surface_interface.h"
 

src/wayland/autotests/server/test_inputmethod_interface.cpp

@@ -15,6 +15,7 @@
 #include "wayland/compositor_interface.h"
 #include "wayland/display.h"
 #include "wayland/inputmethod_v1_interface.h"
+#include "wayland/output_interface.h"
 #include "wayland/seat_interface.h"
 
 #include "KWayland/Client/compositor.h"

src/wayland/layershell_v1_interface.cpp

@@ -6,6 +6,7 @@
 
 #include "layershell_v1_interface.h"
 #include "display.h"
+#include "output_interface.h"
 #include "surface_interface.h"
 #include "surfacerole_p.h"
 #include "utils/common.h"

src/wayland/plasmawindowmanagement_interface.cpp

@@ -5,6 +5,7 @@
 */
 #include "plasmawindowmanagement_interface.h"
 #include "display.h"
+#include "output_interface.h"
 #include "plasmavirtualdesktop_interface.h"
 #include "surface_interface.h"
 #include "utils/common.h"

src/wayland/surface_interface.cpp

@@ -12,6 +12,7 @@
 #include "fractionalscale_v1_interface_p.h"
 #include "idleinhibit_v1_interface_p.h"
 #include "linuxdmabufv1clientbuffer.h"
+#include "output_interface.h"
 #include "pointerconstraints_v1_interface_p.h"
 #include "region_interface_p.h"
 #include "subcompositor_interface.h"

src/wayland/surface_interface.h

@@ -7,13 +7,14 @@
 #pragma once
 
 #include "core/output.h"
-#include "output_interface.h"
 
 #include <QMatrix4x4>
 #include <QObject>
 #include <QPointer>
 #include <QRegion>
 
+struct wl_resource;
+
 namespace KWin
 {
 class GraphicsBuffer;
@@ -22,15 +23,17 @@ class GraphicsBuffer;
 namespace KWaylandServer
 {
 class BlurInterface;
+class ClientConnection;
 class ConfinedPointerV1Interface;
 class ContrastInterface;
 class CompositorInterface;
+class LinuxDmaBufV1Feedback;
 class LockedPointerV1Interface;
+class OutputInterface;
 class ShadowInterface;
 class SlideInterface;
 class SubSurfaceInterface;
 class SurfaceInterfacePrivate;
-class LinuxDmaBufV1Feedback;
 
 enum class PresentationHint {
     VSync,