### 1012 - Subgroup Removed

**Description**: Checks whether an existing subgroup is removed from the previous cli version. 

**Analysis**: This is considered a breaking change because it may influence users' current workflow. This change requires to be released during breaking-change window.

**Example**: Subgroup `az monitor diagnostic-setting subscription` is removed during non-breaking-change window.

#### Before
> + az (command root) 
>  + monitor (group)
>    + diagnostic-setting (sub-group)
>      + create 
>      + delete 
>      + list 
>      + update
>      + subscription (sub-group)
>        + create
>        + delete
>        + list
>        + show
>        + update
>        

#### After 
> + az (command root) 
>  + monitor (group)
>    + diagnostic-setting (sub-group)
>      + create 
>      + delete 
>      + list 
>      + update
>