Review jRPC logs related to user operations

[tclemos]

The current code is logging errors related to user operation as ERROR and this is making it hard to read the logs looking for real errors.

We need to review these logs and find a better way to handle them.

examples:

2023-01-06T20:20:56Z	�[31mERROR�[0m	jsonrpc/server.go:285	execution reverted
2023-01-06T20:20:56Z	�[31mERROR�[0m	jsonrpc/server.go:285	already known

func logging it:

zkevm-node/jsonrpc/server.go

Lines 281 to 288 in 20d08e1

	func rpcErrorResponse(code int, errorMessage string, err error) (interface{}, rpcError) {
	if err != nil {
	log.Errorf("%v:%v", errorMessage, err.Error())
	} else {
	log.Error(errorMessage)
	}
	return nil, newRPCError(code, errorMessage)
	}