Remove temporary emoji database copy from wheel and sdist

[hukkin]

It seems that emoji-en-US.json is a temporary file, mostly a copy of the final despacified emojis.json so perhaps better to leave it out of the wheel and sdist?

This roughly halves the size of wheels built with pipx run build.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.56%. Comparing base (81cf3de) to head (0e8212e).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #163   +/-   ##
=======================================
  Coverage   95.56%   95.56%           
=======================================
  Files           2        2           
  Lines         203      203           
=======================================
  Hits          194      194           
  Misses          9        9           

Flag	Coverage Δ
macos-latest	92.61% <ø> (ø)
ubuntu-latest	93.10% <ø> (ø)
windows-latest	92.61% <ø> (ø)

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[hugovk]

Thanks!

Noting this reduced the whl from 105 KM to 54 KB, and the tar.gz from 112 KB to 62 KB.