Remove ESP32-C3 startup delay

[kounocom]

This no longer seems needed, all serial functions still work without the delay.

[unlogisch04]

I did add this timeout.
The reason for it was, that USB is able to register on the computer and allow to see the full log. ( example for WiFi Setup, and also for more easy debug ).
I don't see any reason why that should have changed.

[Spacefish]

At least you have 2s to start the monitor. It helped with the C6 when i was trying it out.. Not sure if it´s 100% required, as you can still do a reset while being connected to the serial interface via USB.

[kounocom]

That's kinda what I was thinking -- if the full log is needed, user can just send a reboot command via serial
And if it hangs and doesn't respond, I'm pretty sure esptool can still send a soft reset signal