demos: do not generate twice the HelpersDispatchTable

The HelpersDispatchTable.* are already generated by the
encoder lib.

Signed-off-by: Stéphane Cerveau <scerveau@igalia.com>

vk_video_encoder/demos/vk-video-enc/CMakeLists.txt

@@ -1,10 +1,3 @@
-macro(generate_dispatch_table out)
-    add_custom_command(OUTPUT ${out}
-        COMMAND ${PYTHON_EXECUTABLE} ${SCRIPTS_DIR}/generate-dispatch-table.py ${out}
-        DEPENDS ${SCRIPTS_DIR}/generate-dispatch-table.py
-        )
-endmacro()
-
 macro(glsl_to_spirv src)
     add_custom_command(OUTPUT ${src}.h
         COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/glsl-to-spirv ${CMAKE_CURRENT_SOURCE_DIR}/${src} ${CMAKE_CURRENT_SOURCE_DIR}/${src}.h ${GLSLANG_VALIDATOR}
@@ -21,9 +14,6 @@ macro(compile_cuda src)
         )
 endmacro()
 
-generate_dispatch_table(${VK_VIDEO_COMMON_LIBS_SOURCE_ROOT}/VkCodecUtils/HelpersDispatchTable.h)
-generate_dispatch_table(${VK_VIDEO_COMMON_LIBS_SOURCE_ROOT}/VkCodecUtils/HelpersDispatchTable.cpp)
-
 set(sources
     Main.cpp
     ${VK_VIDEO_ENCODER_LIBS_SOURCE_ROOT}/VkVideoEncoder/VkEncoderConfigH264.cpp