No longer call ComputeMinWork() ConputeMinWork() should not be called anymore with the Dark Gravity Wave. The combination of a checkpoint that was too close to the current date and time and fast blocks from fast pools had caused a fork and numerous banned hosts, causing them to isolate themselves into small islands, each with their own chain.
No longer call ComputeMinWork()
ConputeMinWork() should not be called anymore with the Dark Gravity Wave.
The combination of a checkpoint that was too close to the current
date and time and fast blocks from fast pools had caused a fork and
numerous banned hosts, causing them to isolate themselves into small
islands, each with their own chain.

Eventually the longest chain did indeed prevail.

This change removes the computation of date-based and block height
based minimum work, and thus removes the banning that was going on before.

This will allow more nodes to reach a consensus on the current longest
block without the numerous ban islands.

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