Remove Hera

[pirapira]

This might make #9 easier.

[codecov-io]

Codecov Report

Merging #24 into develop will increase coverage by 1.13%.
The diff coverage is 82.02%.

@@             Coverage Diff             @@
##           develop      #24      +/-   ##
===========================================
+ Coverage    71.93%   73.06%   +1.13%     
===========================================
  Files           83       92       +9     
  Lines        10891    12066    +1175     
  Branches      1152     1239      +87     
===========================================
+ Hits          7834     8816     +982     
- Misses        2657     2840     +183     
- Partials       400      410      +10

[winsvega]

Hera is needed for ewasm support?

[pirapira]

@winsvega yes? testeth does not support it.

[winsvega]

it should support compilation of wasm code. axic did a PR to parse it.

[pirapira]

@winsvega this repo testeth is not trying to become popular. It's going to disappear anyway (obsoleted by retesteth or merged again into cpp-ethereum). So I'll be removing features before more people start using it.