fix: remove noisy qwen2 vl nightly test loss check (NVIDIA-NeMo#1272)

Signed-off-by: Terry Kong <terryk@nvidia.com>

Author: terrykong

tests/test_suites/vlm/vlm_grpo-qwen2.5-vl-3b-instruct-clevr-1n2g-dtensor2tp1.v1.sh

@@ -34,7 +34,6 @@ uv run tests/json_dump_tb_logs.py $LOG_DIR --output_path $JSON_METRICS
 # Only run metrics if the target step is reached
 if [[ $(jq 'to_entries | .[] | select(.key == "train/loss") | .value | keys | map(tonumber) | max' $JSON_METRICS) -ge $MAX_STEPS ]]; then
     uv run tests/check_metrics.py $JSON_METRICS \
-        'data["train/loss"]["200"] < 0.1' \
         'data["train/reward"]["200"] > 0.9'
 fi