raidboss: Fix P6s Cachexia 1 timeline (#4825)
raidboss: Fix P6s Cachexia 1 timeline (#4825)

```
334.6 "Aetheronecrosis 3" sync / 1[56]:[^:]*:Hegemone:7877:/
334.8 "Dual Predation" sync / 1[56]:[^:]*:Hegemone:7878:/
335.8 "Predation 1" sync / 1[56]:[^:]*:Hegemone:(787A|787B):/
338.7 "Aetheronecrosis 4" sync / 1[56]:[^:]*:Hegemone:7877:/
```

When I initially wrote this, I assumed that since every ability was more
than 2.5s apart, everything was fine. However, Aetheronecrosis 3 looks
ahead enough to sync with an early fourth usage immediately after
Predation 1. Because of this, it's possible to be behind by about 3-4
seconds during the rest of the Predation usages. It's not always going
to happen, but when it does, it looks like this:

```
334.568: Matched entry: 334.6 Aetheronecrosis 3 (+0.032s)
334.865: Matched entry: 334.8 Dual Predation (-0.065s)
335.737: Matched entry: 335.8 Predation 1 (+0.063s)
336.468: Matched entry: 334.6 Aetheronecrosis 3 (-1.868s)
336.468: Matched entry: 338.7 Aetheronecrosis 4 (+2.232s)
342.087: Matched entry: 339.9 Predation 2 (-2.187s)
342.087: Matched entry: 343.9 Predation 3 (+1.813s)
347.907: Matched entry: 347.9 Predation 4 (-0.007s)
388.405: Matched entry: 384.3 Hemitheos's Dark IV (-4.105s)
    Warning: 40.505s since last sync
    Missed sync: Ptera Ixou at 356.9 (last seen at 360.96299999999997)
    Missed sync: Synergy at 372.2 (last seen at 376.289)
394.949: Matched entry: 395.0 Aetheric Polyominoid (+0.051s)
```

It is technically only necessary to remove the syncs from 3/4, but
stylistically I felt that it made more sense to remove them all and let
the Predations handle any necessary syncs.

(Stuff like this is why we add those giant 30,30 safety syncs all over,
specifically to keep this kind of thing from breaking the entire
encounter!)
quisquous/cactbot,quisquous/cactbot,quisquous/cactbot,quisquous/cactbot,quisquous/cactbot,quisquous/cactbot