Remove RBTC/RSK support from Boltz configuration

- Remove BTC/RBTC swap pair
- Remove RSK network configuration and contracts
- Focus on BTC, cBTC, and USDT stablecoin swaps only

Author: TaprootFreak

infrastructure/config/boltz/backend/dev-boltz.conf

@@ -112,25 +112,6 @@ minSwapAmount = 2_500      # 2,500 sats (pair level)
   swapMaximal = 2880  # Maximum timeout (~48 hours = 288 blocks)
   swapTaproot = 10080 # 1 week for taproot swaps (10080 blocks)
 
-# Swap Pair Configuration: BTC/RBTC (Lightning BTC <-> RSK RBTC)
-[[pairs]]
-base = "BTC"
-quote = "RBTC"
-rate = 1
-fee = 0.25
-swapInFee = 0.1
-
-# Swap amount limits (in satoshis)
-maxSwapAmount = 10_000_000 # 0.1 BTC/RBTC
-minSwapAmount = 2_500      # 2,500 sats minimum (Rootstock has lower fees)
-
-  [pairs.timeoutDelta]
-  chain = 1440        # Chain swap timeout (~24 hours = 144 blocks)
-  reverse = 1440      # ~24 hours for reverse swaps (lightning -> chain)
-  swapMinimal = 1440  # Minimum timeout for submarine swaps (~24 hours = 144 blocks)
-  swapMaximal = 2880  # Maximum timeout (~48 hours = 288 blocks)
-  swapTaproot = 10080 # 1 week for taproot swaps (10080 blocks)
-
 [[pairs]]
 base = "BTC"
 quote = "cBTC"
@@ -182,20 +163,6 @@ minSwapAmount = 1_000_000     # 1 USDT_POLYGON/USDT_CITREA
   swapMaximal = 2880  # Maximum timeout (~48 hours = 288 blocks)
   swapTaproot = 10080 # 1 week for taproot swaps (10080 blocks)
 
-# RSK (Rootstock) Configuration
-[rsk]
-networkName = "RSK Mainnet"
-providerEndpoint = "[PROVIDER_ENDPOINT]"
-
-  [[rsk.contracts]]
-  etherSwap = "0x3d9cc5780CA1db78760ad3D35458509178A85A4A"
-  erc20Swap = "0x7d5a2187CC8EF75f8822daB0E8C9a2DB147BA045"
-
-  [[rsk.tokens]]
-  symbol = "RBTC"
-
-  minWalletBalance = 10_000
-
 # ETH (Ethereum) Configuration
 [ethereum]
 networkName = "Ethereum Mainnet"