Revert of Set number of shards for telemetry_unittests to be 2

testing/buildbot/chromium.fyi.json

Index: testing/buildbot/chromium.fyi.json
diff --git a/testing/buildbot/chromium.fyi.json b/testing/buildbot/chromium.fyi.json
index a7daac9466d26f8780b8289fff6de2bc114ace89..2d3b5c1138de36fa50dc54329c0c06dd076f5f78 100644
--- a/testing/buildbot/chromium.fyi.json
+++ b/testing/buildbot/chromium.fyi.json
@@ -3471,9 +3471,7 @@
           "telemetry_unittests_run"
         ],
         "swarming": {
-          "can_use_on_swarming_builders": true,
-          "hard_timeout": 960,
-          "shards": 2
+          "can_use_on_swarming_builders": true
         }
       }
     ]
@@ -5982,9 +5980,7 @@
           "telemetry_unittests_run"
         ],
         "swarming": {
-          "can_use_on_swarming_builders": true,
-          "hard_timeout": 960,
-          "shards": 2
+          "can_use_on_swarming_builders": true
         }
       }
     ],
@@ -12079,9 +12075,7 @@
           "telemetry_unittests_run"
         ],
         "swarming": {
-          "can_use_on_swarming_builders": true,
-          "hard_timeout": 960,
-          "shards": 2
+          "can_use_on_swarming_builders": true
         }
       }
     ],
@@ -12287,9 +12281,7 @@
           "telemetry_unittests_run"
         ],
         "swarming": {
-          "can_use_on_swarming_builders": true,
-          "hard_timeout": 960,
-          "shards": 2
+          "can_use_on_swarming_builders": true
         }
       }
     ],
@@ -12648,9 +12640,7 @@
           "telemetry_unittests_run"
         ],
         "swarming": {
-          "can_use_on_swarming_builders": true,
-          "hard_timeout": 960,
-          "shards": 2
+          "can_use_on_swarming_builders": true
         }
       }
     ],
@@ -12850,9 +12840,7 @@
           "telemetry_unittests_run"
         ],
         "swarming": {
-          "can_use_on_swarming_builders": true,
-          "hard_timeout": 960,
-          "shards": 2
+          "can_use_on_swarming_builders": true
         }
       }
     ],