Jacek Sieka 6c8f630170
Revert "have each validator randomly pick a stability subnet, per spec (#2194)"
This reverts commit 048a67d525cf6185d747353919897b95c0adf3de.

Fails with:
```
Error: unhandled exception: /data/beacon-node-builds/devel-large/repo/beacon_chain/nimbus_beacon_node.nim(442, 12) `node.attestationSubnets.stabilitySubnets.len == 0`  [AssertionError]
```
2020-12-18 23:04:31 +01:00
..
2020-06-01 16:58:28 +03:00
2020-09-29 10:12:57 +02:00