Remove mingw32 32bit support

Author: vsonnier

.github/workflows/build-mingw.yml

@@ -16,7 +16,6 @@ jobs:
       matrix:
         platform:
         - { name: Windows (mingw64),  os: windows-latest, shell: 'msys2 {0}', msystem: mingw64, msys-env: mingw-w64-x86_64, makefile: Makefile.w64 }
-        - { name: Windows (mingw32),  os: windows-latest, shell: 'msys2 {0}', msystem: mingw32, msys-env: mingw-w64-i686, makefile: Makefile.w32 }
 
     steps:
     - name: Set up MSYS2
@@ -25,7 +24,7 @@ jobs:
         msystem: ${{ matrix.platform.msystem }}
         install: base-devel
           ${{ matrix.platform.msys-env }}-gcc
-          mingw-w64-x86_64-glslang
+          ${{ matrix.platform.msys-env }}-glslang
 
     - uses: actions/checkout@v4