gitlab-ci: remove unused artifact object

.gitlab/artifacts.yml

@@ -34,15 +34,6 @@
             # CDash files.
             - build/DartConfiguration.tcl
 
-.cmake_test_artifacts:
-    artifacts:
-        expire_in: 1d
-        # Tests failing should still upload the artifact for further testing.
-        when: always
-        paths:
-            # Debugging logs
-            - build/Testing/Temporary/Last*.log
-
 .cmake_package_artifacts:
     artifacts:
         expire_in: 4d