remove unused parameter from restore_editor_state()

I can't remember what it was for.

src/scenedit/scen.actions.cpp

@@ -255,7 +255,7 @@ static bool handle_lb_action(int i){
 				file_to_load = nav_get_scenario();
 				if(!file_to_load.empty() && load_scenario(file_to_load, scenario)) {
 					set_pref("LastScenario", file_to_load.string());
-					restore_editor_state(true);
+					restore_editor_state();
 				} else if(!file_to_load.empty())
 					// If we tried to load but failed, the scenario record is messed up, so boot to start screen.
 					set_up_start_screen();
@@ -3201,10 +3201,10 @@ bool monst_on_space(location loc,short m_num) {
 // Restore the state of the editor when the designer last saved this scenario.
 // This state is serialized in scen.fileio.cpp: writeEditorStateToXml()
 // and parsed in fileio_scen.cpp: readEditorStateFromXml().
-void restore_editor_state(bool first_time) {
-	set_current_town(scenario.editor_state.last_town_edited, first_time);
-	set_current_out(scenario.editor_state.last_out_edited, false, first_time);
-	if(first_time && scenario.editor_state.drawing){
+void restore_editor_state() {
+	set_current_town(scenario.editor_state.last_town_edited, true);
+	set_current_out(scenario.editor_state.last_out_edited, false, true);
+	if(scenario.editor_state.drawing){
 		if(scenario.editor_state.editing_town)
 			start_town_edit();
 		else

src/scenedit/scen.actions.hpp

@@ -4,7 +4,7 @@
 #include "scen.undo.hpp"
 
 void handle_close_terrain_view(eScenMode new_mode);
-void restore_editor_state(bool first_time = false);
+void restore_editor_state();
 void init_screen_locs();
 void handle_action(location the_point,sf::Event event);
 void flash_rect(rectangle to_flash);

src/scenedit/scen.appleevents.mm

@@ -53,7 +53,7 @@ void set_up_apple_events() {
 	
 	if(load_scenario(fileName, scenario)) {
 		set_pref("LastScenario", fileName);
-		restore_editor_state(true);
+		restore_editor_state();
 		change_made = false;
 		ae_loading = true;
 	}

src/scenedit/scen.main.cpp

@@ -331,7 +331,7 @@ static void process_args(int argc, char* argv[]) {
 	if(!file.empty()) {
 		if(load_scenario(file, scenario)) {
 			set_pref("LastScenario", file);
-			restore_editor_state(true);
+			restore_editor_state();
 			change_made = false;
 			ae_loading = true;
 		} else {
@@ -481,7 +481,7 @@ void handle_menu_choice(eMenu item_hit) {
 			file_to_load = item_hit == eMenu::FILE_OPEN ? nav_get_scenario() : scenario.scen_file;
 			if(!file_to_load.empty() && load_scenario(file_to_load, scenario)) {
 				set_pref("LastScenario", file_to_load.string());
-				restore_editor_state(true);
+				restore_editor_state();
 				change_made = false;
 			} else if(!file_to_load.empty())
 				set_up_start_screen(); // Failed to load file, dump to start