Fix Weka refresh

[lewtun]

I am removing the refresh on the current working directory as it throws an error I am not sure is worth debugging:

+ echo 'Refreshing Weka filesystem...'
+ find -L /fsx/h4/ -type f
+ xargs -d '\n' -r -n512 -P64 weka fs tier fetch
+ find -L /fsx/lewis/git/hf/dev/open-r1 -type f -not -path '/fsx/lewis/git/hf/dev/open-r1/data/*'
+ xargs -d '\n' -r -n512 -P64 weka fs tier fetch
error: This file is not on a wekafs mount