LakeRat’s advice is spot on. You can delete the old one … BUT. You need to make sure you’ve got everything over to melovell.com first in more ways than just the files I did a double check for you and saw some gotchas.
In your wp-config.php you had this:
That’s the trouble with cache plugins. They don’t move well Since the caching plugin wp-super-cache was removed, I removed those lines from your config file.
I also noted your SQL DB points to mysql.ideasinpolitics.com and you’re using the DB for ideasinpolitics
This isn’t bad, but when ideasinpolitics.com goes away, things may break.
Go to https://panel.dreamhost.com/index.cgi?tree=goodies.mysql& and add in mysql.melovell.com as an SQL database. Once that’s added, you can change your wp-config.php to point to that and safely remove the hosting for ideasinpolitics.com
The DB name being ideasinpolitics is actually okay It’s just the SQL server name (aka DB_HOST) that’s a problem.