Revert "ci: windows: fix HOME reference"

This reverts commit ea6f991.

Author: elopez

.github/workflows/build.yml

@@ -121,7 +121,6 @@ jobs:
       - name: Configure the build
         run: |
           export PATH="$HASKELL_PATHS:$PATH"
-          export HOME="$(cygpath -m ~)"
           cabal configure --disable-documentation --enable-executable-static --enable-executable-stripping \
             --extra-include-dirs="$HOME/.local/include" --extra-lib-dirs="$HOME/.local/lib" \
             --extra-include-dirs="D:/a/_temp/msys64/clang64/include" --extra-lib-dirs="D:/a/_temp/msys64/clang64/lib" \