Loss of "Optimise" button

[Joe Doupnik]

    In Solr v7.3.0 the ability to removed "deleted" docs from a core by 
use of what until then was the Optmise button on the admin GUI has been 
changed in an ungood way. That is, in the V7.3.0 Changes list, item SOLR 
7733 (quote remove "optmize from the UI, end quote). The result of that 
is an apparent inability to remove piles of deleted docs, which amongst 
other things means wasting disk space. That is a marked step backward 
and is unhelpful for use of Solr in the field. As other comments in the 
now closed 7733 ticket explain, this is a user item whidh has impact on 
their site, and it ought to be an inherent feature of Solr. Consider a 
file system where complete deletes are forbidden, or your kitchen where 
taking out the rubbish is denied. Hand waving about obscure auto-sizing 
notions will not suffice. Thus may I urge that the Optimse button and 
operation be returned to use, as it was until Solr v7.3.0.
    Thanks,
    Joe D.