Migrate unique_users_all_imports method from usage_data
Description
As a part of the effort to remove usage_data.rb
file we can now remove unique_users_all_imports
method.
As the outcome we need to have:
- the subject method and associated specs to be removed
- instrumentation classes with specs created for all the metrics (there are 5 in the method)
- metrics definition updated to enable usage of the classes
Edited by Niko Belokolodov