Remove disabled submodule check

It's easy enough to add -DSUBMODULE_CHECK=OFF yourself if you really
won't want it, and much more useful to have it enabled as a default.

contrib/windows-configure.sh

@@ -28,6 +28,5 @@ cmake \
     -DFORCE_FMT_SUBMODULE=ON \
     -DFORCE_SPDLOG_SUBMODULE=ON \
     -DFORCE_NLOHMANN_SUBMODULE=ON \
-    -DSUBMODULE_CHECK=OFF \
     -DWITH_LTO=OFF \
     $@