refactor: remove x/exp dep (#21281)

tests/systemtests/cli.go

@@ -8,6 +8,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"slices"
 	"strings"
 	"testing"
 	"time"
@@ -15,7 +16,6 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"github.com/tidwall/gjson"
-	"golang.org/x/exp/slices"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
 )

tests/systemtests/go.mod

@@ -29,7 +29,6 @@ require (
 	github.com/creachadair/tomledit v0.0.26
 	github.com/tidwall/gjson v1.14.2
 	github.com/tidwall/sjson v1.2.5
-	golang.org/x/exp v0.0.0-20240531132922-fd00a4e0eefc
 )
 
 require (
@@ -147,6 +146,7 @@ require (
 	go.etcd.io/bbolt v1.3.8 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/crypto v0.26.0 // indirect
+	golang.org/x/exp v0.0.0-20240531132922-fd00a4e0eefc // indirect
 	golang.org/x/net v0.28.0 // indirect
 	golang.org/x/sync v0.8.0 // indirect
 	golang.org/x/sys v0.24.0 // indirect

tests/systemtests/system.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"maps"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -23,7 +24,6 @@ import (
 	tmtypes "github.com/cometbft/cometbft/types"
 	"github.com/stretchr/testify/require"
 	"github.com/tidwall/sjson"
-	"golang.org/x/exp/maps"
 
 	"github.com/cosmos/cosmos-sdk/server"
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -336,7 +336,7 @@ func (s *SystemUnderTest) withEachPid(cb func(p *os.Process)) {
 	pids := maps.Keys(s.pids)
 	s.pidsLock.RUnlock()
 
-	for _, pid := range pids {
+	for pid := range pids {
 		p, err := os.FindProcess(pid)
 		if err != nil {
 			continue