cleanup: Remove duplicate and unused MapData classes

- AGVMapEditor/Models/MapData.cs 제거 (미사용)
- SubProject/AGVControl/Models/MapData.cs 제거 (레거시 코드)
- AGVMapEditor.csproj에서 MapData.cs 항목 제거
- AGVMapEditor/Forms/MainForm.cs에서 불필요한 using 제거

모든 맵 데이터 관리는 AGVNavigationCore.Models.MapLoader를 사용

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

Cs_HMI/AGVMapEditor/AGVMapEditor.csproj

@@ -50,7 +50,6 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Models\EditorSettings.cs" />
-    <Compile Include="Models\MapData.cs" />
     <Compile Include="Models\MapImage.cs" />
     <Compile Include="Models\MapLabel.cs" />
     <Compile Include="Models\NodePropertyWrapper.cs" />