[ci] Fail CI again on failing FPGA tests

As #5029 is fixed we can now re-enable the check in CI.

Signed-off-by: Philipp Wagner <phw@lowrisc.org>
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index bf767a2..e201846 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -476,9 +476,6 @@
         --log-cli-level=DEBUG \
         --test-run-title="Run system tests on Nexys Video FPGA board" \
         --napoleon-docstrings
-    # Temporary workaround, see
-    # https://github.com/lowRISC/opentitan/issues/5029 for details.
-    continueOnError: true
     displayName: Execute tests
 
 - job: deploy_release_artifacts