This variable is used on some packages e.g. gpgme/libimobiledevice [1]
but with new autoconf, its better to let autconf detect it than cache it
here
[1] https://github.com/gpg/gpgme/blob/master/configure.ac#L659-L670
(From OE-Core rev: 1747608dfb1b2c8c4a40f819177d22f2bbae85df)
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>