Indexes appear to be equal and one of them should be removed

[AstroDude]

Hello,

When running "check" on my Photopost database I get the following warnings. How do I correct this? I also get two similar warnings from Classifieds as well.

Thanks

Problems with indexes of table `pp_cache`
The following indexes appear to be equal and one of them should be removed: PRIMARY, id

[Chuck S]

There is not an issue with that it is just a warning not an issue.