Use slices.DeleteFunc

Author: strideynet

tool/teleport/common/teleport.go

@@ -1015,13 +1015,10 @@ func onConfigDump(flags dumpFlags) error {
 	// Filter out the default directory /var/lib/teleport/bot used by `tbot` to
 	// avoid throwing a scary warning if `tbot` was installed prior to
 	// configuring teleport.
-	filteredEntries := make([]os.DirEntry, 0, len(entries))
-	for _, entry := range entries {
-		if entry.Name() != "bot" {
-			filteredEntries = append(filteredEntries, entry)
-		}
-	}
-	if err == nil && len(filteredEntries) != 0 {
+	entries = slices.DeleteFunc(entries, func(entry os.DirEntry) bool {
+		return entry.Name() == "bot"
+	})
+	if err == nil && len(entries) != 0 {
 		fmt.Fprintf(
 			os.Stderr,
 			"%s The data directory %s is not empty and may contain existing cluster state. Running this configuration is likely a mistake. To join a new cluster, specify an alternate --data-dir or clear the %s directory.\n",