feat: remove bootstrap nodes from embedded peer lists

Remove all bootstrap node entries from mainnet and testnet peer lists:
- Mainnet: Remove bootstrap-b1 and bootstrap-b2 (2 nodes)
- Testnet: Remove bootstrap-0, bootstrap-1, and bootstrap-alpha (3 nodes)

Keep all participant nodes (Boar and Staked). Network will now rely
entirely on participant nodes for peer discovery, eliminating
bootstrap infrastructure costs.

Remaining peers:
- Mainnet: 5 participant nodes (2 Boar + 3 Staked)
- Testnet: 2 participant nodes (1 Boar + 1 Staked)

Author: piotr-roslaniec

config/_peers/mainnet

@@ -2,6 +2,4 @@
 /dns4/bst-b01.tbtc.boar.network/tcp/5001/ipfs/16Uiu2HAm4w5HdJQxBnadGRepaiGfWVvtMzhdAGZVcrf9i71mv69V
 /dns4/keep-validator-0.prod-eks-eu-west-1.staked.cloud/tcp/3919/ipfs/16Uiu2HAm6Fs6Fn71n7PqRmpHMbfMkZUCGYhW5RL81MSMg57AANkZ
 /dns4/keep-validator-1.prod-eks-ap-northeast-2.staked.cloud/tcp/3919/ipfs/16Uiu2HAm5UzZb1TTYBjb2959h4z4VHzjt585SQqZnJPBrDnJuob7
-/dns4/keep-validator-2.prod-eks-eu-north-1.staked.cloud/tcp/3919/ipfs/16Uiu2HAmJvbYNhzY6a8kiG2zzrqXGnYWax7CQTbiMHoAvY4qLvg7
-/dns4/bootstrap-b1.threshold.p2p.org/tcp/3919/ipfs/16Uiu2HAmG7kjmp4D3C9jkvA8s59tfJzPfJSVqQJkhG6tEvVhJW68
-/dns4/bootstrap-b2.threshold.p2p.org/tcp/3919/ipfs/16Uiu2HAmSuXryEFqeDaMmRZ7KeUdQmHCt3PiWVNpe37q2xR3VT5n
+/dns4/keep-validator-2.prod-eks-eu-north-1.staked.cloud/tcp/3919/ipfs/16Uiu2HAmJvbYNhzY6a8kiG2zzrqXGnYWax7CQTbiMHoAvY4qLvg7

config/_peers/testnet

@@ -1,5 +1,2 @@
-/dns4/bootstrap-0.test.keep.network/tcp/3919/ipfs/16Uiu2HAmCcfVpHwfBKNFbQuhvGuFXHVLQ65gB4sJm7HyrcZuLttH
-/dns4/bootstrap-1.test.keep.network/tcp/3919/ipfs/16Uiu2HAm3eJtyFKAttzJ85NLMromHuRg4yyum3CREMf6CHBBV6KY
 /dns4/bst-a01.test.keep.boar.network/tcp/6001/ipfs/16Uiu2HAmSLDSahiKyTbCNNu8wJmZAsiKF7wuYJ8mogY8ZuAG1jhu
-/dns4/bootstrap-alpha.test.threshold.p2p.org/tcp/3919/ipfs/16Uiu2HAky2Y4Tyq5vTA1CxikcDes6o5EH11i2qcg5dBV9W3Lks5c
 /dns4/keep-validator-0.eks-ap-northeast-2-secure.staging.staked.cloud/tcp/3919/ipfs/16Uiu2HAm77eSvRq5ioD4J8VFPkq3bJHBEHkssCuiFkgAoABwjo2S