Update limits.mdx

Author: elithrar

src/content/docs/r2/platform/limits.mdx

@@ -17,7 +17,6 @@ import { Render } from "~/components";
 | Maximum upload size<sup>4</sup>                                     | 5 GiB<sup>3</sup>            |
 | Maximum upload parts                                                | 10,000                       |
 | Maximum concurrent writes to the same object name (key) | 1 per second <sup>5</sup> | 
-| Maximum concurrent updates to object metadata to the same object name (key) | 1 per second <sup>5</sup> | 
 
 <sup>1</sup> Bucket management operations include creating, deleting, listing,
 and configuring buckets. This limit does _not_ apply to reading or writing objects to a bucket.