Remove all experimental tests from android-pie-arm64-rel.

Given the limited capacity & P coverage due to crbug.com/1111436,
experimental suites on this bot are likely doing more harm than good.

These are the lowest hanging fruits we can chop off in the hopes of
restoring P coverage. So let's remove them for now.

Bug: 1113877, 1111436
Change-Id: Ifa590079673841fadc3ab3d84084dd9d96b140b1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2342121
Commit-Queue: Ben Pastene <[email protected]>
Commit-Queue: Erik Staab <[email protected]>
Auto-Submit: Ben Pastene <[email protected]>
Reviewed-by: Erik Staab <[email protected]>
Cr-Commit-Position: refs/heads/master@{#795777}
diff --git a/testing/buildbot/test_suite_exceptions.pyl b/testing/buildbot/test_suite_exceptions.pyl
index af6b32e..74590f5 100644
--- a/testing/buildbot/test_suite_exceptions.pyl
+++ b/testing/buildbot/test_suite_exceptions.pyl
@@ -685,11 +685,9 @@
     ],
   },
   'chrome_java_test_pagecontroller_tests': {
-    'modifications': {
-      'android-pie-arm64-rel': {
-        'experiment_percentage': 100, # https://crbug.com/924194
-      },
-    },
+    'remove_from': [
+      'android-pie-arm64-rel',  # https://crbug.com/924194
+    ],
   },
   'chrome_public_smoke_test': {
     'remove_from': [
@@ -2605,6 +2603,7 @@
       # There's no need to run unit_tests on both lollipop and marshmallow
       # on the CQ. https://crbug.com/1026487.
       'android-marshmallow-arm64-rel',
+      'android-pie-arm64-rel',  # https://crbug.com/1010211
       'linux-lacros-tester-rel', # https://crbug.com/1111979
     ],
     'modifications': {
@@ -2649,9 +2648,6 @@
           'shards': 8,
         },
       },
-      'android-pie-arm64-rel': {
-        'experiment_percentage': 100, # https://crbug.com/1010211
-      },
       'linux-chromeos-chrome': {
         'args': [
           '--test-launcher-filter-file=../../testing/buildbot/filters/chromeos.unit_tests.filter',