Disable broken job from continuous benchmark (#7947)

Diable broken job from continuous benchmark

Co-authored-by: Github Executorch <[email protected]>

Author: guangy10

.ci/scripts/gather_benchmark_configs.py

@@ -71,6 +71,10 @@ class DisabledConfig(NamedTuple):
             config_name="mps",
             github_issue="https://github.com/pytorch/executorch/issues/7904",
         ),
+        DisabledConfig(
+            config_name="qnn_q8",
+            github_issue="https://github.com/pytorch/executorch/issues/7946",
+        ),
     ],
     "edsr": [
         DisabledConfig(