when disbanding a wing, delete its reinforcement entry

Also rename `remove_wing` to `disband_wing` for clarity.

fred2/fredview.cpp

@@ -2466,7 +2466,7 @@ int query_single_wing_marked()
 void CFREDView::OnDisbandWing() 
 {
 	if (query_single_wing_marked()) {
-		remove_wing(cur_wing);
+		disband_wing(cur_wing);
 		FREDDoc_ptr->autosave("wing disband");
 
 	} else

fred2/wing.cpp

@@ -442,7 +442,7 @@ void remove_ship_from_wing(int ship, int min) {
 	rename_ship(ship, buf);
 }
 
-void remove_wing(int wing_num)
+void disband_wing(int wing_num)
 {
 	int i, total;
 	object *ptr;
@@ -450,6 +450,8 @@ void remove_wing(int wing_num)
 	if (check_wing_dependencies(wing_num))
 		return;
 
+	delete_reinforcement(Wings[wing_num].name);
+
 	Ship_editor_dialog.bypass_errors = Wing_editor_dialog.bypass_errors = 1;
 	Ship_editor_dialog.update_data(0);
 	total = Wings[wing_num].wave_count;

fred2/wing.h

@@ -27,7 +27,7 @@ int create_wing();
  *
  * @param[in] wing_num Index of the wing
  */
-void remove_wing(int wing_num);
+void disband_wing(int wing_num);
 
 /**
  * @brief Takes a ship out of a wing, deleting the wing if that was the only ship in it.

fred2/wing_editor.cpp

@@ -1078,7 +1078,7 @@ void wing_editor::OnDeleteWing()
 void wing_editor::OnDisbandWing()
 {
 	modified = 0;  // no need to run update checks, since wing will be gone shortly anyway.
-	remove_wing(cur_wing);
+	disband_wing(cur_wing);
 }
 
 void wing_editor::OnGoals2()

qtfred/src/mission/Editor.cpp

@@ -1563,7 +1563,7 @@ int Editor::set_reinforcement(const char* name, int state) {
 
 	return 0;
 }
-void Editor::remove_wing(int wing_num) {
+void Editor::disband_wing(int wing_num) {
 
 	int i, total;
 	object* ptr;
@@ -1572,6 +1572,8 @@ void Editor::remove_wing(int wing_num) {
 		return;
 	}
 
+	delete_reinforcement(Wings[wing_num].name);
+
 	total = Wings[wing_num].wave_count;
 	for (i = 0; i < total; i++) {
 		ptr = &Objects[wing_objects[wing_num][i]];

qtfred/src/mission/Editor.h

@@ -233,7 +233,7 @@ class Editor : public QObject {
 	 *
 	 * @param[in] wing_num Index of the wing
 	 */
-	void remove_wing(int wing_num);
+	void disband_wing(int wing_num);
 
 	void delete_marked();
 

qtfred/src/mission/dialogs/WingEditorDialogModel.cpp

@@ -733,7 +733,7 @@ void WingEditorDialogModel::disbandCurrentWing()
 	if (!wingIsValid())
 		return;
 
-	_editor->remove_wing(_currentWingIndex);
+	_editor->disband_wing(_currentWingIndex);
 	reloadFromCurWing();
 }
 

qtfred/src/ui/FredView.cpp

@@ -2694,7 +2694,7 @@ void FredView::on_actionWingForm_triggered(bool  /*enabled*/) {
 }
 void FredView::on_actionWingDisband_triggered(bool  /*enabled*/) {
 	if (fred->query_single_wing_marked()) {
-		fred->remove_wing(fred->cur_wing);
+		fred->disband_wing(fred->cur_wing);
 	} else {
 		showButtonDialog(DialogType::Error,
 						 "Error",