3ed772d221 [tests] remove bignum.py (John Newbery)
f950ec2520 [tests] remove bn2bin() (John Newbery)
3b9b38579c [tests] remove bn_bytes() function (John Newbery)
a760aa14a9 [tests] remove mpi2vch() function (John Newbery)
9a60bef50d [tests] don't encode the integer size in bignum (John Newbery)
1dc68aee66 [tests] add function comments to bignum (John Newbery)
f31fc0e92e [tests] fix flake8 warnings in script.py and bignum.py (John Newbery)
Pull request description:
Only one function is imported in script.py. Just move that function to script.py and remove the bignum.py module.
Remove unused functionality and fix some flake8 warnings along the way.
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Tree-SHA512: 015f543ab545b5d5451896e2751d9c19334d9155b03faacd2023781e89833a2440f7f28741e9a8ac49badd9cdc012cbb6e038cdcdebeefaf9cb9d461c0689157
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