[Buildkite] Fix pipeline_jax.yml (#1223)

Signed-off-by: Pooya Moradi <pooyam@google.com>
Co-authored-by: Pooya Moradi <pooyam@google.com>

Author: py4

.buildkite/pipeline_jax.yml

@@ -258,11 +258,10 @@ steps:
        - test_11
        - test_12
        - test_13
-       - test_15
        - test_16
      agents:
        queue: cpu
      commands:
        - |
          .buildkite/scripts/check_results.sh \
-           "TPU JAX Tests Failed" test_0 test_1 test_2 test_3 test_4 test_5 test_6 test_7 test_8 test_9 test_10 test_11 test_12 test_13 test_15 test_16
+           "TPU JAX Tests Failed" test_0 test_1 test_2 test_3 test_4 test_5 test_6 test_7 test_8 test_9 test_10 test_11 test_12 test_13 test_16