Clean up comments

client/internal/shell/getent_windows.go

@@ -5,7 +5,6 @@ package shell
 import "os/user"
 
 // LookupWithGetent on Windows just delegates to os/user.Lookup.
-// Windows does not use NSS/getent; its user lookup works without CGO.
 func LookupWithGetent(username string) (*user.User, error) {
 	return user.Lookup(username)
 }
@@ -20,7 +19,7 @@ func LookupGroupWithGetent(name string) (*user.Group, error) {
 	return user.LookupGroup(name)
 }
 
-// GetShellFromGetent is a no-op on Windows; shell resolution uses PowerShell detection.
+// GetShellFromGetent is a no-op on Windows.
 func GetShellFromGetent(_ string) string {
 	return ""
 }