remove solr-common-1.4-SNAPSHOT from maven repos

[Ryan McKinley]

Since SOLR-900, 'common' is bundled with 'solrj', we should remove the  
stale snapshot from the apache snapshot repos.

Grant, it looks like you need to remove the file:
 /x1/www/people.apache.org/repo/m2-snapshot-repository/org/apache/ 
solr/solr-common/1.4-SNAPSHOT

thanks!
ryan