how move a table data out of data cache?

If a table has been loaded into a named data cache, how to move it out of cache?

For example, suppose there is a named cache mycache for user database mydb.

mydb is loaded into cache.

then at some point, I want to move a table mytab out of cache and keep others no change. because I found mytab is created by someone with huge garbage data for testing. I want to move it out of cache, but not drop it.