revert: Revert "feat: staking config (#10988)" (#11446)

* Revert "feat: staking config (#10988)"

This reverts commit 5e9656f363.

* remove docs

x/staking/simulation/common_test.go

@@ -0,0 +1,11 @@
+package simulation_test
+
+import (
+	"math/big"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+func init() {
+	sdk.DefaultPowerReduction = sdk.NewIntFromBigInt(new(big.Int).Exp(big.NewInt(10), big.NewInt(18), nil))
+}

x/staking/simulation/operations_test.go

@@ -256,6 +256,7 @@ func TestSimulateMsgBeginRedelegate(t *testing.T) {
 
 // returns context and an app with updated mint keeper
 func createTestApp(t *testing.T, isCheckTx bool, r *rand.Rand, n int) (*simapp.SimApp, sdk.Context, []simtypes.Account) {
+	sdk.DefaultPowerReduction = sdk.NewIntFromBigInt(new(big.Int).Exp(big.NewInt(10), big.NewInt(18), nil))
 
 	accounts := simtypes.RandomAccounts(r, n)
 	// create validator set with single validator
@@ -280,7 +281,6 @@ func createTestApp(t *testing.T, isCheckTx bool, r *rand.Rand, n int) (*simapp.S
 	app.MintKeeper.SetParams(ctx, minttypes.DefaultParams())
 	app.MintKeeper.SetMinter(ctx, minttypes.DefaultInitialMinter())
 
-	app.StakingKeeper.Config.PowerReduction = sdk.NewIntFromBigInt(new(big.Int).Exp(big.NewInt(10), big.NewInt(18), nil))
 	initAmt := app.StakingKeeper.TokensFromConsensusPower(ctx, 200)
 	initCoins := sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, initAmt))