drm/amd/display: Remove unnecessary files

[Why & How]
We accidentally upstream unnecessary files. Remove them.
Reviewed-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dpp/dcn10/CMakeLists.txt

-dal3_subdirectory_sources(
-  dcn10_dpp.c
-  dcn10_dpp_cm.c
-  dcn10_dpp_dscl.c
-  dcn10_dpp.h
-)

drivers/gpu/drm/amd/display/dc/dpp/dcn20/CMakeLists.txt

-dal3_subdirectory_sources(
-  dcn20_dpp.c
-  dcn20_dpp_cm.c
-  dcn20_dpp.h
-)

drivers/gpu/drm/amd/display/dc/dpp/dcn201/CMakeLists.txt

-dal3_subdirectory_sources(
-    dcn201_dpp.c
-    dcn201_dpp.h
-)

drivers/gpu/drm/amd/display/dc/dpp/dcn30/CMakeLists.txt

-dal3_subdirectory_sources(
-  dcn30_dpp.c
-  dcn30_dpp_cm.c
-  dcn30_dpp.h
-)

drivers/gpu/drm/amd/display/dc/dpp/dcn32/CMakeLists.txt

-dal3_subdirectory_sources(
-  dcn32_dpp.c
-  dcn32_dpp.h
-)

drivers/gpu/drm/amd/display/dc/dpp/dcn35/CMakeLists.txt

-dal3_subdirectory_sources(
-  dcn35_dpp.c
-  dcn35_dpp.h
-)

drivers/gpu/drm/amd/display/dc/resource/dce80/CMakeLists.txt

-dal3_subdirectory_sources(
-  dce80_resource.c
-  dce80_resource.h
-  )
\ No newline at end of file