Many problems with the current ZNS delay emulation code, DO NOT use it !!!

[ywang-wnlo]

1. Cannot configure nand erase delay
2. The entire ZNS has only one shared read-write wwp
3. The next_fc_avail_time of fc will be modified repeatedly under multi-threading, resulting in incorrect simulation results
4. The fixed zone_size (NVME_DEFAULT_ZONE_SIZE) may be inconsistent with the zns_num_ch and zns_num_lun configured by itself.
5. lpn = lba / 8, not 4096

[ywang-wnlo]

@hansenidden18 Please fix them and re-submit pr

[inhoinno]

Acknowledged the current status. Thanks for reporting this issue. We will fix the error in ZNS mode.