refactor: replace golang.org/x/exp/slices with slices (#16772)

The experimental functions in `golang.org/x/exp/slices` are now
available in the standard library since Go 1.21.

Reference: https://go.dev/doc/go1.21#slices

Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>

coderd/provisionerdserver/acquirer.go

@@ -4,13 +4,13 @@ import (
 	"context"
 	"database/sql"
 	"encoding/json"
+	"slices"
 	"strings"
 	"sync"
 	"time"
 
 	"github.com/cenkalti/backoff/v4"
 	"github.com/google/uuid"
-	"golang.org/x/exp/slices"
 	"golang.org/x/xerrors"
 
 	"cdr.dev/slog"

coderd/provisionerdserver/acquirer_test.go

@@ -5,6 +5,7 @@ import (
 	"database/sql"
 	"encoding/json"
 	"fmt"
+	"slices"
 	"strings"
 	"sync"
 	"testing"
@@ -15,7 +16,6 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/goleak"
-	"golang.org/x/exp/slices"
 
 	"github.com/coder/coder/v2/coderd/database"
 	"github.com/coder/coder/v2/coderd/database/dbmem"

coderd/provisionerdserver/provisionerdserver.go

@@ -9,6 +9,7 @@ import (
 	"net/http"
 	"net/url"
 	"reflect"
+	"slices"
 	"sort"
 	"strconv"
 	"strings"
@@ -20,7 +21,6 @@ import (
 	semconv "go.opentelemetry.io/otel/semconv/v1.14.0"
 	"go.opentelemetry.io/otel/trace"
 	"golang.org/x/exp/maps"
-	"golang.org/x/exp/slices"
 	"golang.org/x/oauth2"
 	"golang.org/x/xerrors"
 	protobuf "google.golang.org/protobuf/proto"