Style: Replace header guards with #pragma once

modules/gdscript/editor/gdscript_docgen.h

@@ -28,8 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 
-#ifndef GDSCRIPT_DOCGEN_H
-#define GDSCRIPT_DOCGEN_H
+#pragma once
 
 #include "../gdscript_parser.h"
 
@@ -52,5 +51,3 @@ public:
 	static void doctype_from_gdtype(const GDType &p_gdtype, String &r_type, String &r_enum, bool p_is_return = false);
 	static String docvalue_from_expression(const GDP::ExpressionNode *p_expression);
 };
-
-#endif // GDSCRIPT_DOCGEN_H

modules/gdscript/editor/gdscript_highlighter.h

@@ -28,8 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 
-#ifndef GDSCRIPT_HIGHLIGHTER_H
-#define GDSCRIPT_HIGHLIGHTER_H
+#pragma once
 
 #include "editor/plugins/script_editor_plugin.h"
 
@@ -116,5 +115,3 @@ public:
 
 	virtual Ref<EditorSyntaxHighlighter> _create() const override;
 };
-
-#endif // GDSCRIPT_HIGHLIGHTER_H

modules/gdscript/editor/gdscript_translation_parser_plugin.h

@@ -28,8 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 
-#ifndef GDSCRIPT_TRANSLATION_PARSER_PLUGIN_H
-#define GDSCRIPT_TRANSLATION_PARSER_PLUGIN_H
+#pragma once
 
 #include "../gdscript_parser.h"
 #include "../gdscript_tokenizer.h"
@@ -82,5 +81,3 @@ public:
 
 	GDScriptEditorTranslationParserPlugin();
 };
-
-#endif // GDSCRIPT_TRANSLATION_PARSER_PLUGIN_H