Remove the do_configure_prepend, it never worked since the sed command
didn't use '-i'.
(From OE-Core rev: e101de6030949d746e04fb901200ff071b197f0c)
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>