The code in OE-Core using this has been replaced with something more fit
for purpose. Drop these function calls as they were never a great idea in the
first place and cause IO slowdown for runqueue needing to sync the cache.
(Bitbake rev: 2c8fa57778c4bd2a5c48a60b701ac57de4289cb2)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>