contracts-bedrock: delete dead script

[tynes]

Description

Now that #10106
has been merged, this script is dead code and can be deleted.
It was previously the cause of many race conditions and flakes
in CI. Now all genesis generation is done directly in solidity,
simplifying the process as a whole.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 29.22%. Comparing base (c956771) to head (a7447dd).

Additional details and impacted files

@@             Coverage Diff              @@
##           develop   #10265       +/-   ##
============================================
- Coverage    42.40%   29.22%   -13.18%     
============================================
  Files           73       31       -42     
  Lines         4830     2898     -1932     
  Branches       766      614      -152     
============================================
- Hits          2048      847     -1201     
+ Misses        2676     1976      -700     
+ Partials       106       75       -31     

Flag	Coverage Δ
cannon-go-tests	?
chain-mon-tests	27.14% <ø> (ø)
common-ts-tests	?
contracts-ts-tests	12.25% <ø> (ø)
core-utils-tests	?
sdk-tests	40.27% <ø> (ø)

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see 42 files with indirect coverage changes