Rankings include two different entries for some players

[Epithumia]

The ranking files have some double entries (same player, same date, different rank and/or different points) for some players, some of which at least where one is the singles rank and the other is the doubles rank:

player	nb_entries
100905	6
103073	1
106223	1
110788	1
111183	1
111246	1
202421	1
206904	113
208109	20
208124	4
208142	144
208147	223
208533	1
209284	4

Player 208147 notably has both singles and doubles rankings. Player 206904 has singles and some ranking/points that do not match the doubles rankings on the ATP website for the first half of 2022, same with 208142 and 2023.

[Epithumia]

There are also some true duplicate entries (in the 70s and 80s files mostly). I'll try to make a PR request once I've cleaned up.