Disable angle_unittests on Lacros testers.

When switching to isolated scripts the Lacros testers failed.
Disable these tests for now to work around the bug.

Bug: angleproject:5124
Change-Id: I5c68ed47be2ac59f039d9139c8e98d7adf3ab701
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2447102Reviewed-by: Dirk Pranke <dpranke@google.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Cr-Commit-Position: refs/heads/master@{#813979}

testing/buildbot/chromium.chromiumos.json

@@ -4343,18 +4343,6 @@
         "test": "accessibility_unittests",
         "test_id_prefix": "ninja://ui/accessibility:accessibility_unittests/"
       },
-      {
-        "merge": {
-          "args": [],
-          "script": "//testing/merge_scripts/standard_gtest_merge.py"
-        },
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "service_account": "chromium-tester@chops-service-accounts.iam.gserviceaccount.com"
-        },
-        "test": "angle_unittests",
-        "test_id_prefix": "ninja://third_party/angle/src/tests:angle_unittests/"
-      },
       {
         "merge": {
           "args": [],

testing/buildbot/chromium.fyi.json

@@ -46435,24 +46435,6 @@
         "test": "accessibility_unittests",
         "test_id_prefix": "ninja://ui/accessibility:accessibility_unittests/"
       },
-      {
-        "merge": {
-          "args": [],
-          "script": "//testing/merge_scripts/standard_gtest_merge.py"
-        },
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "dimension_sets": [
-            {
-              "os": "Ubuntu-16.04",
-              "ssd": "0"
-            }
-          ],
-          "service_account": "chromium-tester@chops-service-accounts.iam.gserviceaccount.com"
-        },
-        "test": "angle_unittests",
-        "test_id_prefix": "ninja://third_party/angle/src/tests:angle_unittests/"
-      },
       {
         "merge": {
           "args": [],

testing/buildbot/test_suite_exceptions.pyl

@@ -96,6 +96,9 @@
     'remove_from': [
       # On Android, these are already run on the main waterfall.
       'Android FYI Release (Nexus 5X)',
+      # Does not currently work on Lacros configurations.
+      'linux-lacros-tester-rel',
+      'linux-lacros-tester-fyi-rel',
     ],
     'modifications': {
       'Linux ASan LSan Tests (1)': {