Remove "The identifier SHOULD be origin-unique."

getusermedia.html

@@ -3016,7 +3016,7 @@ <h2>Attributes</h2>
               documents, MUST follow the user agents' partitioning rules for
               storage (such as {{WindowLocalStorage/localStorage}}), if any,
               to not interfere with mitigations for cross-site correlation.
-              The identifier SHOULD be origin-unique. If the identifier can uniquely
+              If the identifier can uniquely
               identify the user, then it MUST be un-guessable by browsing contexts
               of other origins to prevent the identifier from being used to
               correlate the same user across different origins. An identifier