remove conan.

BuildRel.bat

@@ -1,32 +1,23 @@
 @echo off
 setlocal enabledelayedexpansion
 
-where conan >nul 2>nul
+where cmake >nul 2>nul
 if errorlevel 1 (
-    echo conan not installed, pip install conan
+    echo cmake not installed.
     pause
     exit /b 1
 )
 
-conan install . -s build_type=Release --build=missing
+cmake -Bbuild -DCMAKE_TOOLCHAIN_FILE=%VCPKG_ROOT%\scripts\buildsystems\vcpkg.cmake -DCMAKE_BUILD_TYPE=Release
 if errorlevel 1 (
-    echo install package failed.
+    config failed.
     pause
     exit /b 1
 )
 
-call %~dp0build\Release\generators\conanbuild.bat
-cmake --preset=conan-release
+cmake --build build --config Release
 if errorlevel 1 (
-    echo config failed.
-    cd ..
-    pause
-    exit /b 1
-)
-cmake --build --preset=conan-release
-if errorlevel 1 (
-    echo build failed.
-    cd ..
+    build failed.
     pause
     exit /b 1
 )