Revert "Add builder for opus test in prevision of rolls."

This reverts commit 9db0a32a.

Reason for revert: Breaking Deterministic {Linux,Windows} bots.

Original change's description:
> Add builder for opus test in prevision of rolls.
> 
> This CL introduces an ad-hoc builder for roll of opus into chromium.
>   1/ Used as pres-submit validation.
>   2/ Runs dedicated tests and benchmarks for a fixed Android model.
> 
> The point 2/ shall be completed in follow-up CLs.
> 
> Bug: chromium:1002973
> Change-Id: Idb5c8b46ab68d8a9d63a864594396ac021a22746
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1816555
> Commit-Queue: Yves Gerey <yvesg@google.com>
> Reviewed-by: John Budorick <jbudorick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#704847}

TBR=agable@chromium.org,jbudorick@chromium.org,yvesg@google.com

Change-Id: Ie6631651d93f83780bbf81b8291f3a9e3fd2bab5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1002973
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1854686Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#705107}

infra/config/cr-buildbucket.cfg

@@ -3953,12 +3953,6 @@ buckets {
     }
 
     # Keep builders sorted by OS, then name.
-    builders {
-      mixins: "android-try"
-      mixins: "builderless"
-      mixins: "linux-xenial"
-      name: "android-opus-kitkat-arm-rel"
-    }
     builders {
       mixins: "android-angle-try"
       mixins: "goma-rbe-prod"

infra/config/generated/cr-buildbucket.cfg

@@ -3953,12 +3953,6 @@ buckets {
     }
 
     # Keep builders sorted by OS, then name.
-    builders {
-      mixins: "android-try"
-      mixins: "builderless"
-      mixins: "linux-xenial"
-      name: "android-opus-kitkat-arm-rel"
-    }
     builders {
       mixins: "android-angle-try"
       mixins: "goma-rbe-prod"

infra/config/generated/luci-milo.cfg

@@ -4132,9 +4132,6 @@ consoles {
   repo_url: "https://chromium.googlesource.com/chromium/src"
   refs: "refs/heads/master"
   manifest_name: "REVISION"
-  builders {
-    name: "buildbucket/luci.chromium.try/android-opus-kitkat-arm-rel"
-  }
   builders {
     name: "buildbucket/luci.chromium.try/android_archive_rel_ng"
   }

infra/config/luci-milo.cfg

@@ -4132,9 +4132,6 @@ consoles {
   repo_url: "https://chromium.googlesource.com/chromium/src"
   refs: "refs/heads/master"
   manifest_name: "REVISION"
-  builders {
-    name: "buildbucket/luci.chromium.try/android-opus-kitkat-arm-rel"
-  }
   builders {
     name: "buildbucket/luci.chromium.try/android_archive_rel_ng"
   }

testing/buildbot/gn_isolate_map.pyl

@@ -2103,11 +2103,6 @@
     "label": "//ios/testing:ocmock_support_unittests",
     "type": "raw",
   },
-  "opus_decoder_unittests": {
-    "args": [],
-    "label": "//third_party/opus:test_opus_decode",
-    "type": "raw",
-  },
   "origin_policy_parser_fuzzer": {
     "label": "//content/test/fuzzer:origin_policy_parser_fuzzer",
     "type": "fuzzer",

testing/buildbot/test_suites.pyl

@@ -4570,13 +4570,6 @@
       }
     },
 
-    'opus_roll_validation_tests': {
-      'opus_decoder_unittests': {
-        # Ad-hoc binary which returns 0 on success.
-       'test': 'audio_decoder_unittests',
-      },
-    },
-
     'ozone_linux_gtests': {
       'services_unittests': {},
       'ozone_unittests': {},

testing/buildbot/tryserver.chromium.android.json

@@ -376,30 +376,6 @@
       }
     ]
   },
-  "android-opus-kitkat-arm-rel": {
-    "isolated_scripts": [
-      {
-        "isolate_name": "opus_decoder_unittests",
-        "merge": {
-          "args": [],
-          "script": "//testing/merge_scripts/standard_isolated_script_merge.py"
-        },
-        "name": "opus_decoder_unittests",
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "dimension_sets": [
-            {
-              "device_os": "KTU84P",
-              "device_os_type": "userdebug",
-              "device_type": "hammerhead",
-              "os": "Android"
-            }
-          ]
-        },
-        "test": "audio_decoder_unittests"
-      }
-    ]
-  },
   "android_blink_rel": {
     "gtest_tests": [
       {

testing/buildbot/waterfalls.pyl

@@ -4430,16 +4430,6 @@
         },
         'os_type': 'android',
       },
-      'android-opus-kitkat-arm-rel': {
-        'mixins': [
-          'kitkat',
-          'hammerhead',
-        ],
-        'os_type': 'android',
-        'test_suites': {
-          'isolated_scripts': 'opus_roll_validation_tests',
-        },
-      },
       'android_blink_rel': {
         'mixins': [
           'kitkat',

tools/mb/mb_config.pyl

@@ -650,7 +650,6 @@
     },
 
     'tryserver.chromium.android': {
-      'android-opus-kitkat-arm-rel': 'android_release_trybot',
       # TODO(crbug/597596): Switch this back to debug_trybot when cronet's
       # shared library loading is fixed.
       'android-cronet-arm-dbg': 'android_cronet_debug_static_bot_arm_no_neon',