[gardening] Skip timing out bigint tests on slow configurations (#31659)

Change-Id: Icae0660dead53848f46ed19bdf1a4f465bec944e
Reviewed-on: https://dart-review.googlesource.com/c/78520
Reviewed-by: William Hesse <whesse@google.com>
diff --git a/tests/corelib_2/corelib_2.status b/tests/corelib_2/corelib_2.status
index caabc0d..59173a7 100644
--- a/tests/corelib_2/corelib_2.status
+++ b/tests/corelib_2/corelib_2.status
@@ -424,8 +424,8 @@
 list_test/*: RuntimeError # VM doesn't implement strong mode covariance checks
 
 [ $arch == simarm || $arch == simarm64 || $arch == simdbc64 || $compiler == dartkb ]
-bigint_parse_radix_test: Pass, Slow # Bigint computations are slow on simulated architectures.
-bigint_test: Pass, Slow, Timeout # Bigint computations are slow on simulated architectures.
+bigint_parse_radix_test: Skip # Issue 31659
+bigint_test: Skip # Issue 31659
 
 [ $arch == simdbc || $arch == simdbc64 ]
 regexp/stack-overflow_test: RuntimeError, OK # Smaller limit with irregex interpreter
@@ -589,6 +589,6 @@
 regexp/UC16_test: RuntimeError
 
 [ $hot_reload || $hot_reload_rollback ]
-bigint_parse_radix_test: Pass, Timeout, Crash # Issue 31659. Issue 34361.
-bigint_test: Pass, Timeout # Issue 31659
+bigint_parse_radix_test: Skip # Issue 31659. Issue 34361.
+bigint_test: Skip # Issue 31659
 integer_parsed_mul_div_vm_test: Pass, Slow # Slow