WIP fix(gnovm): clean object of old private package

[ltzmaxwell]

depends on #4877 .

[Gno2D2]

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[codecov]

Codecov Report

❌ Patch coverage is 49.48454% with 49 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
gnovm/pkg/gnolang/store.go	61.64%	24 Missing and 4 partials ⚠️
gnovm/pkg/gnolang/machine.go	10.00%	17 Missing and 1 partial ⚠️
gno.land/pkg/sdk/vm/keeper.go	25.00%	2 Missing and 1 partial ⚠️

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