postinst-intercepts: do not execute any variant of delay_to_first_boot
As of commit 2c5c6e3ff we create multilib variants of intercept
hooks but we did not account for delay_to_first_boot variants.
This was covered up until commit a335e7867, but will now cause
an error.
(From OE-Core rev: 77f7c75481dceec36b7373f277c3bac811de9ef2)
Signed-off-by: Joe Slater <joe.slater@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>