refactor(mbedtls): remove hack in LIBMBEDTLS_CFLAGS

MbedTLS 3.6.1 fixed the issue which previously
produced this warning, so this hack is no longer
necessary.

Change-Id: I934adefbf2fed16e16b9d98bc8674125b70b08fc
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
(cherry picked from commit 8570895a1b67e0505c321b04e34d5162f06dbe1e)
1 file changed