Revert "tests/lib/timespec_util: Skip two tests by now"

This reverts commit 8f09262.

Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>

Author: cfriedt

tests/lib/timespec_util/src/main.c

@@ -420,8 +420,6 @@ static const struct tospec {
 
 ZTEST(timeutil_api, test_timespec_from_timeout)
 {
-	ztest_test_skip(); /* Provisionally disabled until #92158 is fixed */
-
 	ARRAY_FOR_EACH(tospecs, i) {
 		const struct tospec *const tspec = &tospecs[i];
 		struct timespec actual;
@@ -449,8 +447,6 @@ ZTEST(timeutil_api, test_timespec_from_timeout)
 
 ZTEST(timeutil_api, test_timespec_to_timeout)
 {
-	ztest_test_skip(); /* Provisionally disabled until #92158 is fixed */
-
 	ARRAY_FOR_EACH(tospecs, i) {
 		const struct tospec *const tspec = &tospecs[i];
 		k_timeout_t actual;