Remove mingw-w64-i686-python-numpy from mingw32 build (it does not seem to exist anymore). (#5445)

Last successful: Sat, 16 Nov 2024 18:25:21 GMT

First failure: Sat, 16 Nov 2024 21:43:28 GMT

```
Installing additional packages through pacman...
  C:\Windows\system32\cmd.exe /D /S /C D:\a\_temp\setup-msys2\msys2.cmd -c "'pacman' '--noconfirm' '-S' '--needed' '--overwrite' '*' 'git' 'mingw-w64-i686-gcc' 'mingw-w64-i686-python-pip' 'mingw-w64-i686-python-numpy' 'mingw-w64-i686-cmake' 'mingw-w64-i686-make' 'mingw-w64-i686-python-pytest' 'mingw-w64-i686-boost' 'mingw-w64-i686-catch'"
  error: target not found: mingw-w64-i686-python-numpy
  Error: The process 'C:\Windows\system32\cmd.exe' failed with exit code 1
```

Author: rwgk

.github/workflows/ci.yml

@@ -1019,7 +1019,6 @@ jobs:
           git
           mingw-w64-${{matrix.env}}-gcc
           mingw-w64-${{matrix.env}}-python-pip
-          mingw-w64-${{matrix.env}}-python-numpy
           mingw-w64-${{matrix.env}}-cmake
           mingw-w64-${{matrix.env}}-make
           mingw-w64-${{matrix.env}}-python-pytest
@@ -1031,7 +1030,7 @@ jobs:
       with:
         msystem: ${{matrix.sys}}
         install: >-
-          git
+          mingw-w64-${{matrix.env}}-python-numpy
           mingw-w64-${{matrix.env}}-python-scipy
           mingw-w64-${{matrix.env}}-eigen3