fix(object_velocity_splitter): refactor CMakeLists (#6270)

Signed-off-by: scepter914 <scepter914@gmail.com>
Co-authored-by: Kotaro Yoshimoto <pythagora.yoshimoto@gmail.com>

Author: scepter914

perception/object_velocity_splitter/CMakeLists.txt

@@ -1,17 +1,6 @@
 cmake_minimum_required(VERSION 3.5)
 project(object_velocity_splitter)
 
-# Compile options
-if(NOT CMAKE_CXX_STANDARD)
-  set(CMAKE_CXX_STANDARD 17)
-  set(CMAKE_CXX_STANDARD_REQUIRED ON)
-  set(CMAKE_CXX_EXTENSIONS OFF)
-endif()
-
-if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-  add_compile_options(-Wall -Wextra -Wpedantic)
-endif()
-
 # Dependencies
 find_package(autoware_cmake REQUIRED)
 autoware_package()