Do not run lint on test sources

test/CMakeLists.txt

@@ -97,11 +97,6 @@ endforeach (UNIT_TEST)
 # ============================================================================
 find_package(Cpplint) # sets CPPLINT_FOUND and CPPLINT_PROGRAM
 if (CPPLINT_FOUND)
-  # List unit test source files
-  foreach (UNIT_TEST IN LISTS UNIT_TESTS)
-    list(APPEND UNIT_TEST_SOURCE_FILES ${hglib_SOURCE_DIR}/test/${UNIT_TEST}.cpp)
-  endforeach (UNIT_TEST)
-
   add_custom_target(run_cpplint
       COMMAND cpplint --extensions=h,hpp,cpp
       # filter runtime/explicit: requires explicit one argument constructor