chore(gnovm): remove unused Machine.MaxCycles

[mvertes]

The logic to manage the CPU limit is already handled by the gasmeter, which has the ability to panic the gnovm if a cpu limit is reached.

It's simpler and faster to have only one path of failure.

No other changes in CPU cycles accounting, still performed in gnovm.

[Gno2D2]

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Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
gnovm/pkg/gnolang/machine.go	0.00%	1 Missing ⚠️

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