refactor: 첫번째 plan의 삭제버튼 제거

src/components/floor-plan/CanvasLayout.jsx

@@ -37,6 +37,7 @@ export default function CanvasLayout({ children }) {
               onClick={() => handleCurrentPlan(plan.id)}
             >
               <span>{`Plan ${plan.ordering}`}</span>
+              {plan.ordering !== 1 && (
                 <i
                   className="close"
                   onClick={(e) =>
@@ -49,6 +50,7 @@ export default function CanvasLayout({ children }) {
                     })
                   }
                 ></i>
+              )}
             </button>
           ))}
         </div>