Remove Netty's SO_TIMEOUT setting

[kciesielski]

This setting is not used and causes Netty to print warnings.

[adamw]

Not used - it seems it was there in the default config? Don't we want to have a read timeout?

[kciesielski]

Netty complains that it doesn't recognize SO_TIMEOUT (and it spams with this warning for each newly opened connection), this channel option is probably relevant for different kinds of channels.
For read timeout, we have the requestTimeout setting, which is applied to the ReadTimeoutHandler.

[adamw]

ah ok :) thanks