Revert "chore: Add changelog entry for sentry.timestamp.sequence (PR #262)"

This reverts commit 377dabd.

Author: logaretm

model/attributes/sentry/sentry__timestamp__sequence.json

@@ -6,11 +6,5 @@
     "key": "false"
   },
   "is_in_otel": false,
-  "example": 0,
-  "changelog": [
-    {
-      "version": "next",
-      "prs": [262]
-    }
-  ]
+  "example": 0
 }