refactor: optimize kv store calls

x/feeabs/keeper/config.go

@@ -59,14 +59,17 @@ func (k Keeper) SetHostZoneConfig(ctx sdk.Context, chainConfig types.HostChainFe
 }
 
 func (k Keeper) DeleteHostZoneConfig(ctx sdk.Context, ibcDenom string) error {
-	store := ctx.KVStore(k.storeKey)
 	hostZoneConfig, ok := k.GetHostZoneConfig(ctx, ibcDenom)
-	if ok {
-		key := types.GetKeyHostZoneConfigByOsmosisIBCDenom(hostZoneConfig.OsmosisPoolTokenDenomIn)
-		store.Delete(key)
+	if !ok {
+		return types.ErrHostZoneConfigNotFound
 	}
 
-	key := types.GetKeyHostZoneConfigByFeeabsIBCDenom(ibcDenom)
+	store := ctx.KVStore(k.storeKey)
+
+	key := types.GetKeyHostZoneConfigByOsmosisIBCDenom(hostZoneConfig.OsmosisPoolTokenDenomIn)
+	store.Delete(key)
+
+	key = types.GetKeyHostZoneConfigByFeeabsIBCDenom(ibcDenom)
 	store.Delete(key)
 
 	return nil

x/feeabs/types/build_memo.go

@@ -2,7 +2,7 @@ package types
 
 import (
 	"encoding/json"
-	fmt "fmt"
+	"fmt"
 	"time"
 )