feat: clean deprecated code

[cosinlink]

CI
{
"hardfork": "pascal",
"bsc": "bnb-chain/bsc@9579134"
}
CI

Description

clean deprecated code and add ci to compare genesis with bytecode files from bsc repo

for deprecated contracts and functions:

1. non-view and non-pure external functions => revert
2. view or pure external functions => not change
3. internal functions => removed

Example

local check without ci

export HARDFORK=pascal
export BSC_URL=https://github.com/bnb-chain/bsc/pull/2692/commits/f7ab40e46171af937a70767bb0221653d574eafe
ts-node scripts/check-bsc-hardfork-bytecode.ts

Rationale

Preventing the exploitation of deprecated code for security

Changes

Notable changes:

1. non-view and non-pure external functions => revert
2. view or pure external functions => not change
3. internal functions => removed
4. add ci check bytecode

[pythonberg1997]

_decodeMigrationSynPackage and _doMigration in StakeHub are no longer needed

[cosinlink]

_decodeMigrationSynPackage and _doMigration in StakeHub are no longer needed

removed