Remove redundant ninja

.github/workflows/build-windows.yml

@@ -2,7 +2,6 @@ name: build-windows
 
 env:
   MPV_VERSION: "20251214-git-f7be2ee"
-  NINJA_VERSION: "1.13.2"
   QT_VERSION: "6.10.1"
 
 on:
@@ -44,9 +43,6 @@ jobs:
         mkdir build
         curl -L https://aka.ms/vs/17/release/vc_redist.${{ matrix.vc_redist_arch }}.exe > vc_redist.${{ matrix.vc_redist_arch }}.exe
         sed -i 's#C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Redist\\MSVC\\v142\\vcredist_x64.exe#'"$(readlink -f vc_redist.${{ matrix.vc_redist_arch }}.exe | sed 's#/\([a-z]\)/#\1:\\#g' | tr '/' '\\' | sed 's/\\/\\\\/g')#g" bundle/win/Bundle.wxs
-        curl -L https://github.com/ninja-build/ninja/releases/download/v${{ env.NINJA_VERSION }}/ninja-win.zip > ninja.zip
-        unzip ninja.zip
-        mv ninja.exe build/
         curl -L https://sourceforge.net/projects/mpv-player-windows/files/libmpv/mpv-dev-${{ matrix.mpv_arch }}-${{ env.MPV_VERSION }}.7z/download > mpv.7z
         7z x mpv.7z
         mkdir mpv
@@ -62,7 +58,7 @@ jobs:
         call "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\${{ matrix.vcvars }}"
         cd build
         set PATH=%PATH%;C:\Program Files (x86)\WiX Toolset v3.11\bin;%CD%
-        cmake -GNinja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_INSTALL_PREFIX=output -DCMAKE_MAKE_PROGRAM=ninja.exe -DQTROOT=%Qt6_DIR% -DMPV_INCLUDE_DIR=mpv/include -DMPV_LIBRARY=mpv/libmpv-2.dll -DCHECK_FOR_UPDATES=ON -DUSE_STATIC_MPVQT=ON ..
+        cmake -GNinja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_INSTALL_PREFIX=output -DQTROOT=%QT_ROOT_DIR% -DMPV_INCLUDE_DIR=mpv/include -DMPV_LIBRARY=mpv/libmpv-2.dll -DCHECK_FOR_UPDATES=ON -DUSE_STATIC_MPVQT=ON ..
         lib /def:mpv\mpv.def /out:mpv\libmpv-2.dll.lib /MACHINE:${{ matrix.machine }}
         ninja
         mkdir output 2>nul