chore: remove unnecessary code (#2395)

## Description



closes: #XXXX

---

Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

- [ ] Targeted PR against correct branch (see [CONTRIBUTING.md](https://github.com/cosmos/ibc-go/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
- [ ] Code follows the [module structure standards](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules/structure.md).
- [ ] Wrote unit and integration [tests](https://github.com/cosmos/ibc-go/blob/master/CONTRIBUTING.md#testing)
- [ ] Updated relevant documentation (`docs/`) or specification (`x/<module>/spec/`)
- [ ] Added relevant `godoc` [comments](https://blog.golang.org/godoc-documenting-go-code).
- [ ] Added a relevant changelog entry to the `Unreleased` section in `CHANGELOG.md`
- [ ] Re-reviewed `Files changed` in the Github PR explorer
- [ ] Review `Codecov Report` in the comment section below once CI passes

CHANGELOG.md

@@ -43,6 +43,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### API Breaking
 
+* (apps/29-fee) [\#2395](https://github.com/cosmos/ibc-go/pull/2395) Remove param space from ics29 NewKeeper function. The field was unused.
 * (testing)[\#2028](https://github.com/cosmos/ibc-go/pull/2028) New interface `ibctestingtypes.StakingKeeper` added and set for the testing app `StakingKeeper` setup.
 * (core/04-channel) [\#1418](https://github.com/cosmos/ibc-go/pull/1418) `NewPacketId` has been renamed to `NewPacketID` to comply with go linting rules.
 * (core/ante) [\#1418](https://github.com/cosmos/ibc-go/pull/1418) `AnteDecorator` has been renamed to `RedundancyDecorator` to comply with go linting rules and to give more clarity to the purpose of the Decorator.

modules/apps/29-fee/keeper/keeper.go

@@ -5,7 +5,6 @@ import (
 	storetypes "github.com/cosmos/cosmos-sdk/store/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	capabilitytypes "github.com/cosmos/cosmos-sdk/x/capability/types"
-	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
 	"github.com/tendermint/tendermint/libs/log"
 
 	"github.com/cosmos/ibc-go/v6/modules/apps/29-fee/types"
@@ -34,8 +33,9 @@ type Keeper struct {
 
 // NewKeeper creates a new 29-fee Keeper instance
 func NewKeeper(
-	cdc codec.BinaryCodec, key storetypes.StoreKey, paramSpace paramtypes.Subspace,
-	ics4Wrapper types.ICS4Wrapper, channelKeeper types.ChannelKeeper, portKeeper types.PortKeeper, authKeeper types.AccountKeeper, bankKeeper types.BankKeeper,
+	cdc codec.BinaryCodec, key storetypes.StoreKey,
+	ics4Wrapper types.ICS4Wrapper, channelKeeper types.ChannelKeeper,
+	portKeeper types.PortKeeper, authKeeper types.AccountKeeper, bankKeeper types.BankKeeper,
 ) Keeper {
 	return Keeper{
 		cdc:           cdc,

testing/simapp/app.go

@@ -224,7 +224,6 @@ type SimApp struct {
 	// make scoped keepers public for test purposes
 	ScopedIBCKeeper           capabilitykeeper.ScopedKeeper
 	ScopedTransferKeeper      capabilitykeeper.ScopedKeeper
-	ScopedIBCFeeKeeper        capabilitykeeper.ScopedKeeper
 	ScopedFeeMockKeeper       capabilitykeeper.ScopedKeeper
 	ScopedICAControllerKeeper capabilitykeeper.ScopedKeeper
 	ScopedICAHostKeeper       capabilitykeeper.ScopedKeeper
@@ -389,7 +388,7 @@ func NewSimApp(
 
 	// IBC Fee Module keeper
 	app.IBCFeeKeeper = ibcfeekeeper.NewKeeper(
-		appCodec, keys[ibcfeetypes.StoreKey], app.GetSubspace(ibcfeetypes.ModuleName),
+		appCodec, keys[ibcfeetypes.StoreKey],
 		app.IBCKeeper.ChannelKeeper, // may be replaced with IBC middleware
 		app.IBCKeeper.ChannelKeeper,
 		&app.IBCKeeper.PortKeeper, app.AccountKeeper, app.BankKeeper,