remove dead cmake code

ortools/algorithms/python/CMakeLists.txt

@@ -30,10 +30,3 @@ endif()
 
 target_link_libraries(knapsack_solver_pybind11 PRIVATE ${PROJECT_NAMESPACE}::ortools)
 add_library(${PROJECT_NAMESPACE}::knapsack_solver_pybind11 ALIAS knapsack_solver_pybind11)
-
-if(BUILD_TESTING)
-  file(GLOB PYTHON_SRCS "*_test.py")
-  foreach(FILE_NAME IN LISTS PYTHON_SRCS)
-    add_python_test(FILE_NAME ${FILE_NAME})
-  endforeach()
-endif()