T5247: T2556: Delete deprecated commans show interfaces system and vrrp

[sever-sever]

Change Summary

Delete deprecated op-mode comamnds:

• show interfaces system
• show interfaces vrrp

vyos@r4:~$ show interfaces system
-vbash: /opt/vyatta/bin/vyatta-show-interfaces: No such file or directory

For VRRP we use show vrrp

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe): Delete deprecated/old commands

Related Task(s)

• https://vyos.dev/T5247
• https://vyos.dev/T2556

Related PR(s)

Component(s) name

interfaces

Proposed changes

How to test

Before delete

vyos@r4:~$ show interfaces system 
-vbash: /opt/vyatta/bin/vyatta-show-interfaces: No such file or directory
vyos@r4:~$ 
vyos@r4:~$ show interfaces system 
-vbash: /opt/vyatta/bin/vyatta-show-interfaces: No such file or directory
vyos@r4:~$ 
vyos@r4:~$ show interfaces vrrp 
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface        IP Address                        S/L  Description
---------        ----------                        ---  -----------
vyos@r4:~$ 

Smoketest result

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

[sever-sever]

@Mergifyio backport sagitta

[mergify]

backport sagitta

✅ Backports have been created

• #88 T5247: T2556: Delete deprecated commans show interfaces system and vrrp (backport #86) has been created for branch sagitta