Remove Big varint lib - Githubissues

Coverage report for experimental massa-web3

St.^{:grey_question:}	Category	Percentage	Covered / Total
🟡	Statements	63.46% (+0.3% 🔼)	1134/1787
🔴	Branches	43.91% (+0.11% 🔼)	191/435
🔴	Functions	46.76% (+0.36% 🔼)	209/447
🟡	Lines	63.76% (+0.3% 🔼)	1128/1769

Show new covered files 🐣

St.^{:grey_question:}

| File | Statements | Branches | Functions | Lines | | :-: | :- | :- | :- | :- | :- | | 🟢 |

`...` / big-varint.ts

| 80.65% | 50% | 100% | 80.65% |

129 tests passing in 13 suites.

Report generated by 🧪jest coverage report action from 4d6b8414dc10b51f5c180e143b4ee8520f306764