Unneeded annotation in PacketBuffer#readString

[PanSzelescik]

@OnlyIn(Dist.CLIENT) is unneeded in my opinion in 1.14.4

Edited September 22, 2019 by PanSzelescik
I didn't add the version of Minecraft

[LexManos]

Think through your 'suggestions' and understand what you're doing.

@OnlyIn is NOT something Forge adds, it is a marker to tell you that the method doesn't exist in the jar Mojang ships.

If the annotation is there, it's because it IS needed to emulate the Mojang environment.