Removing baseboard heater and installing elec oven on that wall

Probably not.

• There are 120V and 240V baseboard heaters. Your oven will almost certainly be 240V.
• Baseboard heaters basically max out at 1500W. Ovens are more 2000W+.
• The baseboard circuit probably had other things on it.

I'm ignoring the code issues, because I don't know the code, but I'd say the wiring is probably not good enough on a technical level. If this happened to be a 240V, 2500W heater on a dedicated circuit, it might be worthwhile to check the code, but anything less beefy than that isn't going to work.