insane: don't check for a warning string that is never output
insane has checks that the compiler isn't printing "CROSS COMPILE
Badness" during configure/compile/install, but this message hasn't been
output by GCC since 2010 (
23f522e7).
The current warning is "include location [...] is unsafe for cross-
compilation" and as that is a proper GCC warning, we can make it fatal
in follow-up patches.
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
