Revert "[cmake] Created command to run python unit tests individually"

This reverts commit 7f7a421.

Author: cmastalli

unittest/CMakeLists.txt

@@ -73,15 +73,6 @@ function(add_python_eigenpy_lib_unit_test name source)
   set(test_target ${PROJECT_NAME}-${name})
   add_python_unit_test(${test_target} ${source} "lib" "bin" "python")
   set_tests_properties(${test_target} PROPERTIES DEPENDS ${PYWRAP})
-  string(REPLACE "unittest/" "" source_rel "${source}")
-  add_custom_target(
-    "test-${name}"
-    ${CMAKE_COMMAND}
-    -E
-    env
-    PYTHONPATH=${PROJECT_BINARY_DIR}/lib:${PROJECT_BINARY_DIR}/python:$ENV{PYTHONPATH}
-    ${PYTHON_EXECUTABLE}
-    "${CMAKE_CURRENT_SOURCE_DIR}/${source_rel}")
 endfunction()
 
 function(add_python_eigenpy_unit_test name source)