fix: remove cut-loss from maker strategy — hold to resolution

No cut-loss needed: worst case is losing buy cost (2c/share) which
resolves on-chain. If on winning side, payout is $1/share.
Removed marketSell, cutLossSells, and makerCutLossTime config.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.env.example

@@ -181,9 +181,6 @@ MAKER_SELL_PRICE=0.03
 # Shares per side (e.g. 50 shares × 0.02 = $1.00 cost per side)
 MAKER_TRADE_SIZE=50
 
-# Seconds before market close to trigger cut-loss
-MAKER_CUT_LOSS_TIME=60
-
 # How often to poll for new markets (seconds)
 MAKER_POLL_INTERVAL=10