If a file no longer exists, drop it from the cache silently instead of
generating a traceback. This was visible in some cases when a recipe was
deleted when bitbake was resident in memory.
(Bitbake rev: fe105b9042bdac4afd9f38fcf92bfdc2c04ec23f)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>