fix cargo build errors

Author: wphan

programs/drift/src/state/perp_market.rs

@@ -10,15 +10,17 @@ use crate::error::{DriftResult, ErrorCode};
 use crate::math::amm;
 use crate::math::casting::Cast;
 #[cfg(test)]
-use crate::math::constants::{AMM_RESERVE_PRECISION, MAX_CONCENTRATION_COEFFICIENT};
+use crate::math::constants::{
+    AMM_RESERVE_PRECISION, MAX_CONCENTRATION_COEFFICIENT, PRICE_PRECISION_I64,
+};
 use crate::math::constants::{
     AMM_TO_QUOTE_PRECISION_RATIO, BID_ASK_SPREAD_PRECISION, BID_ASK_SPREAD_PRECISION_I128,
     BID_ASK_SPREAD_PRECISION_U128, DEFAULT_REVENUE_SINCE_LAST_FUNDING_SPREAD_RETREAT,
     FUNDING_RATE_BUFFER_I128, FUNDING_RATE_OFFSET_PERCENTAGE, LIQUIDATION_FEE_PRECISION,
     LIQUIDATION_FEE_TO_MARGIN_PRECISION_RATIO, MARGIN_PRECISION, MARGIN_PRECISION_U128,
     MAX_LIQUIDATION_MULTIPLIER, PEG_PRECISION, PERCENTAGE_PRECISION, PERCENTAGE_PRECISION_I128,
     PERCENTAGE_PRECISION_I64, PERCENTAGE_PRECISION_U64, PRICE_PRECISION, PRICE_PRECISION_I128,
-    PRICE_PRECISION_I64, SPOT_WEIGHT_PRECISION, TWENTY_FOUR_HOUR,
+    SPOT_WEIGHT_PRECISION, TWENTY_FOUR_HOUR,
 };
 use crate::math::margin::{
     calculate_size_discount_asset_weight, calculate_size_premium_liability_weight,