Remove another mentioning of IAR from config.h
* when called behaves similarly to the gmtime() function from the C standard,
* but is thread safe. Mbed TLS will try to identify the underlying platform
* and configure an appropriate underlying implementation (e.g. gmtime_r() for
- * POSIX and gmtime_s() for Windows and IAR). If this is not possible, then
+ * POSIX and gmtime_s() for Windows). If this is not possible, then
* gmtime() will be used. Refer to the documentation for
* mbedtls_platform_gmtime() for more information.
*
