Style: Replace header guards with #pragma once

core/io/remote_filesystem_client.h

@@ -28,8 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 
-#ifndef REMOTE_FILESYSTEM_CLIENT_H
-#define REMOTE_FILESYSTEM_CLIENT_H
+#pragma once
 
 #include "core/string/ustring.h"
 #include "core/templates/hash_set.h"
@@ -60,5 +59,3 @@ public:
 	Error synchronize_with_server(const String &p_host, int p_port, const String &p_password, String &r_cache_path);
 	virtual ~RemoteFilesystemClient() {}
 };
-
-#endif // REMOTE_FILESYSTEM_CLIENT_H