# Remove the submodule entry from .git/config
git submodule deinit -f path/to/submodule
# Remove the submodule directory from the superproject's .git/modules directory
rm -rf .git/modules/path/to/submodule
# Remove the entry in .gitmodules and remove the submodule directory located at path/to/submodule
git rm -f path/to/submodule
# Remove the submodule entry from .git/config
git submodule deinit -f path/to/submodule
# Remove the entry in .gitmodules and remove the submodule directory located at path/to/submodule
git rm -f path/to/submodule
# Remove the submodule directory from the superproject's .git/modules directory
rm -rf .git/modules/path/to/submodule
#Remember to commit the remove change!
git commit -m "removed submodule"
mv subfolder subfolder_tmp
git submodule deinit subfolder
git rm --cached subfolder
mv subfolder_tmp subfolder
git add subfolder
Option 1.
Remove .gitmodules file from project
Option 2.
rm -rf .git/modules/path_to_submodule
Remember to commit the remove change!