doc: delete config_apollo_health_mq.json

[seeflood]

What this PR does:
Delete config_apollo_health_mq.json. Demos use config_redis.json instead.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov]

Codecov Report

Merging #423 (a04a0c3) into main (f308686) will not change coverage.
The diff coverage is n/a.

❗ Current head a04a0c3 differs from pull request most recent head 204f426. Consider uploading reports for the commit 204f426 to get more accurate results

@@           Coverage Diff           @@
##             main     #423   +/-   ##
=======================================
  Coverage   60.18%   60.18%           
=======================================
  Files         117      117           
  Lines        6252     6252           
=======================================
  Hits         3763     3763           
  Misses       2128     2128           
  Partials      361      361           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f308686...204f426. Read the comment docs.