Remove dependencies on Boost.StaticAssert

[Lastique]

Boost.StaticAssert has been merged into Boost.Config, so remove the dependency.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.06%. Comparing base (b035da1) to head (83803fc).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #36      +/-   ##
===========================================
- Coverage    92.59%   92.06%   -0.53%     
===========================================
  Files            5        5              
  Lines          135      126       -9     
  Branches        47       47              
===========================================
- Hits           125      116       -9     
  Misses           6        6              
  Partials         4        4              

see 3 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b035da1...83803fc. Read the comment docs.

🚀 New features to boost your workflow:

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