[None][chore] Disable GB300 stages in release branch due to nodes will be offline temporarily (#8645)

Signed-off-by: Yiqing Yan <[email protected]>

Author: yiqingy0

jenkins/L0_Test.groovy

@@ -2175,10 +2175,11 @@ def launchTestJobs(pipeline, testFilter)
     fullSet += SBSATestConfigs.keySet()
 
     SBSASlurmTestConfigs = [
-        "GB300-PyTorch-1": ["gb300-single", "l0_gb300", 1, 1],
+        // Disable GB300 stages due to nodes will be offline temporarily.
+        // "GB300-PyTorch-1": ["gb300-single", "l0_gb300", 1, 1],
         "GB200-4_GPUs-PyTorch-1": ["gb200-x4", "l0_gb200_multi_gpus", 1, 1, 4],
         "GB200-4_GPUs-PyTorch-Post-Merge-1": ["gb200-x4", "l0_gb200_multi_gpus", 1, 1, 4],
-        "GB300-4_GPUs-PyTorch-Post-Merge-1": ["gb300-x4", "l0_gb300_multi_gpus", 1, 1, 4],
+        // "GB300-4_GPUs-PyTorch-Post-Merge-1": ["gb300-x4", "l0_gb300_multi_gpus", 1, 1, 4],
     ]
     fullSet += SBSASlurmTestConfigs.keySet()