glados: no vmtest needed in factory pre-flight builder

BUG=None
TEST=tryjob

Change-Id: I2d5c54e259fe389e70bdb6a3b8e4ebd8dc7de478
Reviewed-on: https://chromium-review.googlesource.com/c/1323756
Reviewed-by: YH Lin <yueherngl@chromium.org>
Commit-Queue: YH Lin <yueherngl@chromium.org>
Tested-by: YH Lin <yueherngl@chromium.org>
diff --git a/cbuildbot/chromeos_config.py b/cbuildbot/chromeos_config.py
index 3d1b2b7..13f41c7 100644
--- a/cbuildbot/chromeos_config.py
+++ b/cbuildbot/chromeos_config.py
@@ -1517,6 +1517,7 @@
 
   site_config.Add(
       'glados-pre-flight-branch', internal_pfq_branch,
+      no_vmtest_builder,
       master=True,
       push_overlays=constants.BOTH_OVERLAYS,
       boards=['glados'],
diff --git a/cbuildbot/config_dump.json b/cbuildbot/config_dump.json
index a827231..c495f32 100644
--- a/cbuildbot/config_dump.json
+++ b/cbuildbot/config_dump.json
@@ -7374,7 +7374,9 @@
             "{\n    \"async\": true,\n    \"blocking\": false,\n    \"critical\": false,\n    \"file_bugs\": false,\n    \"max_retries\": 10,\n    \"minimum_duts\": 0,\n    \"num\": 1,\n    \"offload_failures_only\": false,\n    \"pool\": \"suites\",\n    \"priority\": \"PostBuild\",\n    \"retry\": true,\n    \"suite\": \"bvt-perbuild\",\n    \"suite_min_duts\": 1,\n    \"timeout\": 13200,\n    \"warn_only\": false\n}"
         ],
         "master": true,
-        "push_overlays": "both"
+        "push_overlays": "both",
+        "vm_tests": [],
+        "vm_tests_override": null
     },
     "glados-release": {
         "_template": "release",