Removing raw data files

[Carol Walter <walterc@xxxxxxxxxxx>]

Hello,

I asked this question a while ago and I didn't get an answer.    
Perhaps I asked the question in a manner that wasn't clear.  I  
upgraded from 8.1.3 to 8.2.3.  I left the 8.1.3 database intact in  
case I had to revert to it.  The 8.2.3 database is running just fine  
and I'd like to recover the space that the 8.1.3 raw data directories  
are consuming.  Can I just remove the raw data files with rm -rf on  
the data directory for the 8.1.3 version?  This may sound like a  
silly question but the database I worked with prior to postgres was  
MS SQL Server.  On that platform, you never know when something from  
the last version is imbedded in the new version.

Carol