Drop the deprecated rand.egd function

[alex]

No description provided.

[codecov]

Codecov Report

Merging #630 into master will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #630      +/-   ##
==========================================
- Coverage   96.79%   96.78%   -0.01%     
==========================================
  Files          18       18              
  Lines        5642     5625      -17     
  Branches      393      390       -3     
==========================================
- Hits         5461     5444      -17     
  Misses        121      121              
  Partials       60       60

Impacted Files	Coverage Δ
src/OpenSSL/rand.py	91.3% <ø> (-1.8%)	⬇️
tests/test_rand.py	100% <ø> (ø)	⬆️

---

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 d52975c...267528a. Read the comment docs.

[hynek]

lgtm, covfefe only went down because we removed covered code.