refactor: remove preprocessing report prompt from workflow

Simplify the BOM conversion workflow by removing the interactive prompt for preprocessing report generation. This streamlines the main conversion process.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

VBA/Modules/M01_Main.bas

@@ -114,13 +114,6 @@ Public Sub RunBOMConversion()
         MsgBox "转换完成，但发现部分数据存在逻辑冲突，已生成错误报告。", vbExclamation
     End If
 
-    ' 7. 询问是否生成预处理报表（可选）
-    If MsgBox("是否生成预处理条件转换对比报表？" & vbCrLf & _
-              "(仅展示'接头'类别的条件转换结果)", _
-              vbQuestion + vbYesNo, "预处理报表") = vbYes Then
-        Call GeneratePreprocessingReport
-    End If
-
 ExitHandler:
     ' 清理状态
     Application.StatusBar = False