Revert renaming whitespace-no-wrap to whitespace-nowrap

[adamwathan]

We shouldn't change this unless we also change flex-no-wrap to flex-nowrap. Changing multiple class names starts to feel like a more annoying breaking change, so going to revert this and reconsider. We'll either change both in a future commit, or just leave it as-is.

Small chance we just add flex-nowrap and whitespace-nowrap as aliases and stop documenting the versions with the extra dash, then remove in 3.0, but feels kinda stupid to introduce a deprecation instead of a break, especially one that affects the the CSS bundle size sent to the client.

[codecov-io]

Codecov Report

Merging #2675 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2675   +/-   ##
=======================================
  Coverage   92.99%   92.99%           
=======================================
  Files         172      172           
  Lines        1727     1727           
  Branches      304      304           
=======================================
  Hits         1606     1606           
  Misses        104      104           
  Partials       17       17           

Impacted Files	Coverage Δ
src/plugins/whitespace.js	100.00% <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 a669180...a79f750. Read the comment docs.

[adamwathan]

Gonna plow ahead with new name, and rename flex-no-wrap to flex-nowrap as well.