Revert "Run content_unittests on ssds for win10-code-coverage builder"

This reverts commit 7aae98f681d8425137554ee8e05099a4a61600b2.

Reason for revert: no capacity errors

Original change's description:
> Run content_unittests on ssds for win10-code-coverage builder
>
> Bug: 1487067
> Change-Id: I2d57d2eff014879e9a280c69b1b97ba55ab6b3ef
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4927595
> Auto-Submit: Prakhar Asthana <[email protected]>
> Reviewed-by: Jeff Yoon <[email protected]>
> Commit-Queue: Jeff Yoon <[email protected]>
> Cr-Commit-Position: refs/heads/main@{#1207829}

Bug: 1487067
Change-Id: I000a90b2d5296c060c36a353d47f75653e8ae2c3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4931065
Bot-Commit: Rubber Stamper <[email protected]>
Commit-Queue: Prakhar Asthana <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1208352}
diff --git a/testing/buildbot/test_suite_exceptions.pyl b/testing/buildbot/test_suite_exceptions.pyl
index 628c641..c5a0c36 100644
--- a/testing/buildbot/test_suite_exceptions.pyl
+++ b/testing/buildbot/test_suite_exceptions.pyl
@@ -2305,11 +2305,7 @@
       'win10-code-coverage': {
         'swarming': {
           'shards': 2,
-          'dimensions': {
-            'pool': 'chromium.tests.coverage',
-            'ssd': '1',
-          },
-        }
+        },
       },
     },
   },