feat!: remove SystemManagementClient

[chr1shung]

BREAKING CHANGE: remove SystemManagementClient

closes #790

Signed-off-by: Chris Hung chris@iotechsys.com

If your build fails due to your commit message not passing the build checks, please review the guidelines here: https://github.com/edgexfoundry/go-mod-core-contracts/blob/main/.github/Contributing.md

PR Checklist

Please check if your PR fulfills the following requirements:

• I am not introducing a breaking change (if you are, flag in conventional commit message with BREAKING CHANGE: describing the break)
• I am not introducing a new dependency (add notes below if you are)
• I have added unit tests for the new feature or bug fix (if not, why?)
• I have fully tested (add details below) this the new feature or bug fix (if not, why?)
• I have opened a PR for the related docs change (if not, why?)

Testing Instructions

New Dependency Instructions (If applicable)

[codecov-commenter]

Codecov Report

Merging #795 (4228851) into main (77bba85) will decrease coverage by 0.06%.
The diff coverage is n/a.

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@            Coverage Diff             @@
##             main     #795      +/-   ##
==========================================
- Coverage   64.48%   64.42%   -0.06%     
==========================================
  Files          81       80       -1     
  Lines        3114     3092      -22     
==========================================
- Hits         2008     1992      -16     
+ Misses        914      911       -3     
+ Partials      192      189       -3     

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[lenny-goodell]

LGTM