Tegra210: Remove "unsupported func ID" error msg

The platform sip is reporting a "unsupported function ID" if the
smc function id is not pmc command. When actually the smc function id
could be specific to the tegra sip handler.
This patch removes the error reported.

Change-Id: Ia3c8545d345746c5eea6d75b9e6957ca23ae9ca3
Signed-off-by: Kalyani Chidambaram <kalyanic@nvidia.com>

plat/nvidia/tegra/soc/t210/plat_sip_calls.c

@@ -88,7 +88,6 @@ int plat_sip_handler(uint32_t smc_fid,
 			return -EINVAL;
 		}
 	} else {
-		ERROR("%s: unsupported function ID\n", __func__);
 		return -ENOTSUP;
 	}
 	return 0;