Skip synthetic methods in entrypoints

[modmuss50]

Skip synthetic methods in entrypoints, such as the main(String[]) method added by kotlin when using top-level functions.

Im not sure if I like this, and it technically is a breaking change (although I doubt anyone is using this?)

[sfPlayer1]

Ideally we'd skip the methods with the wrong descriptor instead - it has to be identical the non-defaut interface method.

[modmuss50]

Closing this as its not a good solution, and only a very minor issue.