Revert "Vanir actions and utilities"

There is NO REASON for those to live in SystemUI.

FlushMemory will probably violate selinux fifteen times, and should not be necessary.

Whitespace in vanir_strings.xml sucks.

An unused string in it is called action_robocop.

This reverts commit da00d9448a47aa755f86acf21c792691d3376ab9.

Change-Id: Id5f19e191f5cb5cd319cb4a36ac92503c495c148
Merge "Revert "Vanir actions and utilities"" into L5