Drop database by deleting files

[Scott Genevish]

I'm trying to drop a database and getting "Error dropping database (can't rmdir './databasename', errno: 39)"

After reading this: http://stackoverflow.com/questions/12196996/mysql-error-dropping-database-errno-13-errno-17-errno-39

...I believe it's because we changed the case sensitivity of MySQL, and it has both lower-case and mixed-case versions of the tables. To get around this, can I just delete the files in that directory? These are INNODB tables, if that matters.

Thanks,

-Scott