remove gen2 profiles from code and docs

[bcle]

gen2 profiles were deprecated in v0.10, and therefore should be removed in v0.11.

Aha! Link: https://pf9.aha.io/features/ARLON-383

[Rohitrajak1807]

Please see #430

[cruizen]

gen2 profiles were deprecated in v0.10, and therefore should be removed in v0.11.

Aha! Link: https://pf9.aha.io/features/ARLON-383

Do we want to refer to the current-gen (used to be next-gen) profiles as gen2 profiles and remove the gen1 profiles only?
This is still somewhat confusing in docs - though we know that appProfiles have replaced the profile CR.