[windows]update ci config.

Author: xgfd3

.github/ci/build/build_windows.bat

@@ -79,6 +79,7 @@ del /F /Q Agora_Native_SDK_for_Windows_FULL\commits
 del /F /Q Agora_Native_SDK_for_Windows_FULL\package_size_report.txt
 mkdir Agora_Native_SDK_for_Windows_FULL\samples
 mkdir Agora_Native_SDK_for_Windows_FULL\samples\API-example
+rmdir /S /Q windows\cicd
 xcopy /Y /E windows\APIExample Agora_Native_SDK_for_Windows_FULL\samples\API-example
 xcopy /Y /E windows\README.md Agora_Native_SDK_for_Windows_FULL\samples\API-example
 xcopy /Y /E windows\README.zh.md Agora_Native_SDK_for_Windows_FULL\samples\API-example