Bug 1577251: Delete password requests when changing primary email

behatnotneeded

Change-Id: I63080b651e08e8e747a891e9f7f2283bfecb72f1
Signed-off-by: Robert Lyon <robertl@catalyst.net.nz>
(cherry picked from commit 6cfb0274)
(cherry picked from commit 4a51beb3)