Removal of features

[Ozaq]

Description

Removes several features.

Commits:

Remove rsync support
Fixes: ECKIT-667
---
Remove ViennaCL support
Fixes: ECKIT-664
---
Remove Armadillo support
Fixes: ECKIT-663
---
Remove jemalloc support
Fixes: ECKIT-641
---

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.

🌦️ >> Documentation << 🌦️
https://sites.ecmwf.int/docs/dev-section/eckit/pull-requests/PR-263

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.97%. Comparing base (34cbfaa) to head (8ed50ac).
⚠️ Report is 17 commits behind head on release/2.0.0.

Additional details and impacted files

@@                Coverage Diff                @@
##           release/2.0.0     #263      +/-   ##
=================================================
- Coverage          65.99%   65.97%   -0.03%     
=================================================
  Files               1126     1126              
  Lines              57440    57448       +8     
  Branches            4376     4379       +3     
=================================================
- Hits               37910    37899      -11     
- Misses             19530    19549      +19     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.