remove double doc upload after CloudFront fix (#7516)

.github/workflows/docs.yml

@@ -66,16 +66,3 @@ jobs:
           if-no-files-found: error
           path: html
           s3-prefix: pytorch/vision/${{ github.event.pull_request.number }}
-
-      # The upload below duplicates the upload from above, but to a different path. This is needed since we are in the
-      # process of changing the path, but want to keep the disruption to a minimum.
-      # See https://github.com/pytorch/test-infra/issues/3894
-      # After a grace period, we can delete this again
-      - name: Upload docs preview
-        uses: seemethere/upload-artifact-s3@v5
-        with:
-          retention-days: 14
-          s3-bucket: doc-previews
-          if-no-files-found: error
-          path: html
-          s3-prefix: pytorch/pytorch/vision/${{ github.event.pull_request.number }}