remove bellin/blondel references, they don't exist

per https://wikitech.wikimedia.org/wiki/Tampa_cluster#Misc._Services_Migrated

'bellin & blondel are m1 shards, which have been replicated by eqiad servers already --robh'

per site.pp

'manifests/site.pp:## m1 shard (used to be db9|blondel|bellin in the past)'

i don't know if these should be replaced by other server names, i'm merely
removing the remnants of old servers that don't exist anymore and it made
me stumble upon this. it is more to get your attention to it than
actual merge request, unless it makes sense

Change-Id: I00294e179f3a479982a3e7c117684eed2aa0aee7