Use the terms erase / erasure instead of remove / removal for personal data

[allendav]

To match terminology better with the GDPR which is the biggest privacy law soon to be in effect, and which refers to "Right to Erasure"

[allendav]

Change remove and its variants to erase in admin facing strings

[postphotos]

Confirming in chat: We want to generally use the terms "erase"/"erasure" and this is the right approach forward, @allendav. Here's @idea15's quote from Slack:

Yes - this is a case where the term is very niche to this particular point of law, as opposed to being generic. Also "erasure" helps differentiate from "right to be forgotten", which is the most misinterpreted and misrepresented point of data protection law.

[SergeyBiryukov]

In 43175:

Privacy: Use the terms "erase"/"erasure" instead of "remove"/"removal" for personal data.

Props allendav.
Fixes #43920.

[SergeyBiryukov]

In 43176:

Privacy: Use the terms "erase"/"erasure" instead of "remove"/"removal" for personal data.

Props allendav.
Merges [43175] to the 4.9 branch.
Fixes #43920.

[desrosj]

Moving to the new Privacy component.