Remove unit_tests and telemetry_perf_unitests from CQ marshmallow builder.

The CQ does not have enough marshmallow capacity. These test suites collectively
take up ~16% of total capacity, and did not provide positive utility in the last
month. See bug for more details.

Bug: 1026487
Change-Id: I895b2da397499da2dfef8c9e6a623a3098e43f61
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1927295
Auto-Submit: Erik Chen <[email protected]>
Reviewed-by: Stephen Martinis <[email protected]>
Commit-Queue: Erik Chen <[email protected]>
Cr-Commit-Position: refs/heads/master@{#717766}
diff --git a/testing/buildbot/test_suite_exceptions.pyl b/testing/buildbot/test_suite_exceptions.pyl
index bde2a3a6..5c0d6c8 100644
--- a/testing/buildbot/test_suite_exceptions.pyl
+++ b/testing/buildbot/test_suite_exceptions.pyl
@@ -1611,20 +1611,6 @@
           'shards': 15,
         },
       },
-      'android-marshmallow-arm64-rel': {
-        'args': [
-          '--browser=android-chromium',
-          '--device=android',
-        ],
-        'swarming': {
-          'dimension_sets': [
-            {
-              'temp_band': '<30',
-            },
-          ],
-          'shards': 10,
-        },
-      },
       'android-pie-arm64-rel': {
         'args': [
           '--browser=android-chromium',
@@ -1686,6 +1672,9 @@
       },
     },
     'remove_from': [
+      # There's no need to run telemetry_perf_unittests on both kitkat and
+      # marshmallow on the CQ. https://crbug.com/1026487.
+      'android-marshmallow-arm64-rel',
       # crbug.com/936540
       'Mac10.10 Tests',
       'Mac10.11 Tests',
@@ -1715,6 +1704,9 @@
   'unit_tests': {
     'remove_from': [
       'android-code-coverage-native', # crbug/1018434
+      # There's no need to run unit_tests on both kitkat and marshmallow
+      # on the CQ. https://crbug.com/1026487.
+      'android-marshmallow-arm64-rel',
     ],
     'modifications': {
       # chromium.clang