Fix CMake warning: qt5_make_output_file is not part of the official API, and might be removed in Qt 6.

src/Mod/Image/Gui/CMakeLists.txt

@@ -27,24 +27,6 @@ set(ImageGui_LIBS
     ${OPENGL_glu_LIBRARY}
 )
 
-set(ImageGui_MOC_HDRS
-    ImageView.h
-    ImageOrientationDialog.h
-)
-
-if(FREECAD_USE_QTOPENGL_WIDGET)
-    list(APPEND ImageGui_MOC_HDRS
-        OpenGLImageBox.h
-    )
-else()
-    list(APPEND ImageGui_MOC_HDRS
-        GLImageBox.h
-    )
-endif()
-
-fc_wrap_cpp(ImageGui_MOC_SRCS ${ImageGui_MOC_HDRS})
-SOURCE_GROUP("Moc" FILES ${ImageGui_MOC_SRCS})
-
 SET(ImageGui_RES_SRCS
     Resources/Image.qrc
 )
@@ -62,7 +44,6 @@ else()
 endif()
 
 SET(ImageGui_SRCS
-#   ${ImageGui_MOC_SRCS}
     ${ImageGui_QRC_SRCS}
     ${ImageGui_UIC_HDRS}
     AppImageGui.cpp