FIX: no duplex command before no speed

[yannkeedelta]

SUMMARY

Change the order of removal for speed and duplex options to comply with Nexus platform constraints.

ISSUE TYPE

• Bugfix Pull Request
  Error occurs when attempting to remove duplex before speed:
  ERROR: Duplex cannot be configured when speed is auto

• Docs Pull Request

On Cisco Nexus devices, attempting to configure duplex mode (full/half) results in an error if the interface speed is not manually set.
Duplex mode can only be configured when the interface speed is not set to auto.

This is due to the fact that autonegotiation, which is enabled by default when speed auto is set, handles both speed and duplex settings.
Therefore, if speed is left in auto mode, the duplex is negotiated automatically and cannot be manually overridden.

• Feature Pull Request
  Change the order of removal for speed and duplex options to prevent configuration errors.

COMPONENT NAME

nxos_duplex

ADDITIONAL INFORMATION

This change avoids the following error that occurs when duplex is removed before speed:

ERROR: Duplex cannot be configured when speed is auto

[AAYUSH2091]

@yannkeedelta Can you please resolve the conflicts and add a changelog to this PR?