[process.md] Remove broken link to index.xml

Author: benrimmington

process.md

@@ -87,11 +87,9 @@ repository][swift-evolution-repo] to reflect that decision.
 ## Proposal states
 A given proposal can be in one of several states:
 
-* **Awaiting review**: The proposal is awaiting review. Once known,
-  the dates for the actual review will be placed in the proposal
-  document and updated in the [list of proposals](index.xml). When the
-  review period begins, the review manager will update the state to
-  *Active review*.
+* **Awaiting review**: The proposal is awaiting review. Once known, the dates
+  for the actual review will be placed in the proposal document. When the review
+  period begins, the review manager will update the state to *Active review*.
 * **Scheduled for review (MONTH DAY...MONTH DAY)**: The public review of the proposal
   on the [swift-evolution mailing list][swift-evolution-mailing-list]
   has been scheduled for the specified date range.