include/stdint.h: Remove old reference to ROMCC

Change-Id: I00fdcee177c5d4b5e95bc3d0330fd8934eee2f0a
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39072
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jacob Garber <jgarber1@ualberta.ca>

src/include/stdint.h

@@ -14,10 +14,6 @@
 #ifndef STDINT_H
 #define STDINT_H
 
-/* romcc does not support long long, _Static_assert, or _Bool, so we must ifdef that code out.
-   Also, GCC can provide its own implementation of stdint.h, so in theory we could use that
-   instead of this custom file once romcc is no more. */
-
 /* Fixed width integer types */
 typedef signed char        int8_t;
 typedef unsigned char      uint8_t;