KVM: selftests: Drop stale srandom() initialization from dirty_log_test

Drop an srandom() initialization that was leftover from the conversion to
use selftests' guest_random_xxx() APIs.

Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20250111003004.1235645-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

Author: sean-jc

tools/testing/selftests/kvm/dirty_log_test.c

@@ -891,8 +891,6 @@ int main(int argc, char *argv[])
 	pr_info("Test iterations: %"PRIu64", interval: %"PRIu64" (ms)\n",
 		p.iterations, p.interval);
 
-	srandom(time(0));
-
 	if (host_log_mode_option == LOG_MODE_ALL) {
 		/* Run each log mode */
 		for (i = 0; i < LOG_MODE_NUM; i++) {