Matt Groening has says he will remain on the show, but will probably be reduced to more of a background character rather than a voiced semi reoccurring character.
The whole thing was pretty fucking odd anyway, dude going about how Apu was offensive
Apu was unironically one of the nicest characters in the show.
Started his own business from scratch, married the women he loved, had lots of kids and raised them well with her and is a loving husband, was once a main singer in a successful band, has an IQ over 100, drives a Pontiac firebird and in his spare time is a volunteer firefighter- Apu is an absoloute chad
But just because he has a 'stereotypical indian accent' (which if you ever know any Indians is pretty accurate to how they talk) some Indian guy got pissy and claimed he was racist and so he was very nearly permanently removed from the show.