Removal of some DB column that aren't needed

[NicolasDorier]

Tasks

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1. InvoiceEvents contains an unused 10 bytes UniqueId (Cleanup data from the InvoiceEvents table Cleanup data from the InvoiceEvents table #5904), which consume a lot of space.
2. Cleanup AddressesInvoices table (Cleanup AddressesInvoices table Cleanup AddressesInvoices table #5905)
3. Remove CustomerEmail, ItemCode, OrderId, Archived? from Invoices table

[pavlenex]

@NicolasDorier did you finish this one? Or is that still something remaining, if it's finished let's close it? If there's more we can add it to 2.1.0?