Revert "Re-adding dummy benchamrks to chromium debug waterfalls."

This reverts commit 81715b6.

Reason for revert: Breaks on Win10 Tests x64 (dbg).

"""
BrowserFinderException: Cannot find browser of type debug. 

Available browsers:
debug_x64
reference
"""

and

"""
Traceback (most recent call last):
  File "..\..\testing\scripts\run_performance_tests.py", line 312, in <module>
    sys.exit(main())
  File "..\..\testing\scripts\run_performance_tests.py", line 284, in main
    sharding = sharding_map[shard_index]['benchmarks']
KeyError: '7'
"""

depending on shard number

Original change's description:
> Re-adding dummy benchamrks to chromium debug waterfalls.
> 
> Previously
> reviewed here: https://chromium-review.googlesource.com/c/chromium/src/+/1055776
> and then reverted.
> 
> We have to set the browser for each configuration that we run on.
> It will be one of debug, release or android-chromium.  We can do this one
> of two ways:
> 
> 1) multiple entries in test_suites.pyl
> 2) add each entry in test_suite_exceptions.pyl
> 
> Although #1 is less verbose I think #2 is how these files are intended
> to be used.
> 
> Bug: 840427
> Change-Id: Idff4c36a248215dbfdf0faed45b483800046bf26
> Reviewed-on: https://chromium-review.googlesource.com/1066088
> Reviewed-by: John Budorick <jbudorick@chromium.org>
> Commit-Queue: Emily Hanley <eyaich@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#560571}

TBR=nednguyen@google.com,eyaich@chromium.org,jbudorick@chromium.org

Change-Id: I89ca43c0eb6292ee252c459e1db94749bfb603b0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 840427,845543
Reviewed-on: https://chromium-review.googlesource.com/1069420
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Commit-Queue: Jeremy Roman <jbroman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#560744}

testing/buildbot/chromium.mac.json

@@ -2374,26 +2374,6 @@
           "can_use_on_swarming_builders": true
         }
       },
-      {
-        "args": [
-          "--smoke-test-mode",
-          "--test-shard-map-filename=smoke_test_benchmark_shard_map.json",
-          "--browser=debug"
-        ],
-        "isolate_name": "performance_test_suite",
-        "merge": {
-          "args": [
-            "--smoke-test-mode"
-          ],
-          "script": "//tools/perf/process_perf_results.py"
-        },
-        "name": "performance_test_suite",
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "hard_timeout": 960,
-          "shards": 12
-        }
-      },
       {
         "isolate_name": "telemetry_gpu_unittests",
         "name": "telemetry_gpu_unittests",

testing/buildbot/chromium.win.json

@@ -1683,26 +1683,6 @@
           "can_use_on_swarming_builders": true
         }
       },
-      {
-        "args": [
-          "--smoke-test-mode",
-          "--test-shard-map-filename=smoke_test_benchmark_shard_map.json",
-          "--browser=debug"
-        ],
-        "isolate_name": "performance_test_suite",
-        "merge": {
-          "args": [
-            "--smoke-test-mode"
-          ],
-          "script": "//tools/perf/process_perf_results.py"
-        },
-        "name": "performance_test_suite",
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "hard_timeout": 960,
-          "shards": 12
-        }
-      },
       {
         "isolate_name": "telemetry_gpu_unittests",
         "name": "telemetry_gpu_unittests",
@@ -2944,26 +2924,6 @@
           "can_use_on_swarming_builders": true
         }
       },
-      {
-        "args": [
-          "--smoke-test-mode",
-          "--test-shard-map-filename=smoke_test_benchmark_shard_map.json",
-          "--browser=debug"
-        ],
-        "isolate_name": "performance_test_suite",
-        "merge": {
-          "args": [
-            "--smoke-test-mode"
-          ],
-          "script": "//tools/perf/process_perf_results.py"
-        },
-        "name": "performance_test_suite",
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "hard_timeout": 960,
-          "shards": 12
-        }
-      },
       {
         "isolate_name": "telemetry_gpu_unittests",
         "name": "telemetry_gpu_unittests",

testing/buildbot/test_suite_exceptions.pyl

@@ -2230,25 +2230,6 @@
       'Linux TSan Tests',
     ],
   },
-  'performance_test_suite': {
-    'modifications': {
-      'Mac10.13 Tests (dbg)': {
-        'args': [
-          '--browser=debug',
-        ],
-      },
-      'Win10 Tests x64 (dbg)': {
-        'args': [
-          '--browser=debug',
-        ],
-      },
-      'Win7 Tests (dbg)(1)': {
-        'args': [
-          '--browser=debug',
-        ],
-      },
-    }
-  },
   'telemetry_perf_unittests': {
     'modifications': {
       # chromium.android

testing/buildbot/test_suites.pyl

@@ -1563,25 +1563,6 @@
     'system_webview_shell_layout_test_apk': {},
   },
 
-  'performance_smoke_test_isolated_scripts': {
-    'performance_test_suite': {
-      'args': [
-        '--smoke-test-mode',
-	'--test-shard-map-filename=smoke_test_benchmark_shard_map.json'
-      ],
-      'swarming': {
-        'hard_timeout': 960,
-        'shards': 12,
-      },
-      'merge': {
-        'args': [
-          '--smoke-test-mode',
-        ],
-        'script': '//tools/perf/process_perf_results.py',
-      },
-    },
-  },
-
   'telemetry_perf_unittests_isolated_scripts': {
     'telemetry_perf_unittests': {
       'swarming': {
@@ -1799,7 +1780,6 @@
   'chromium_dbg_isolated_scripts': [
     'desktop_chromium_isolated_scripts',
     'telemetry_perf_unittests_isolated_scripts',
-    'performance_smoke_test_isolated_scripts',
   ],
 
   'chromium_rel_isolated_scripts': [