auditlog: skip notification for admin triggered account removal

[nijel]

Proposed changes

This leaks admin IP address to the user.

Fixes #9983

Checklist

• Lint and unit tests pass locally with my changes.
• I have added tests that prove my fix is effective or that my feature works.
• I have added documentation to describe my feature.
• I have squashed my commits into logic units.
• I have described the changes in the commit messages.

Other information

[codecov]

Codecov Report

Merging #9986 (9a54380) into main (15059e5) will not change coverage.
Report is 34 commits behind head on main.
The diff coverage is 66.66%.

@@           Coverage Diff           @@
##             main    #9986   +/-   ##
=======================================
  Coverage   90.93%   90.93%           
=======================================
  Files         533      533           
  Lines       55305    55305           
  Branches     8780     8780           
=======================================
  Hits        50291    50291           
  Misses       3484     3484           
  Partials     1530     1530           

Files Changed	Coverage
weblate/accounts/models.py	ø
weblate/accounts/views.py	0.00%
weblate/accounts/utils.py	100.00%