DbProjectDelete doesn't work

[eric-marin]

Describe the bug
The command DbProjectDelete doesn't correctly delete projects in cache

To Reproduce
Steps to reproduce the behavior:

1. Delete a project with DbProjectDelete
2. $HOME/.cache/nvim/dashboard/cache gets corrupted

Expected behavior
$HOME/.cache/nvim/dashboard/cache gets updated correctly

Screenshots
Before:

After trying to delete the Haskell one:

[Melal1]

#522 #521