Clear cruft from service.status file.

runtime/observatory/tests/service/service.status

Index: runtime/observatory/tests/service/service.status
diff --git a/runtime/observatory/tests/service/service.status b/runtime/observatory/tests/service/service.status
index ce688fbc6b7e173e15ca61ec020a8d016e9211d6..d2a9b867bb34f106561688e0dfcd34872d4f1e32 100644
--- a/runtime/observatory/tests/service/service.status
+++ b/runtime/observatory/tests/service/service.status
@@ -6,22 +6,6 @@
 evaluate_activation_test/instance: RuntimeError # http://dartbug.com/20047
 evaluate_activation_test/scope: RuntimeError # http://dartbug.com/20047
 
-# Unexpected number format
-[ $system == windows ]
-code_test: Skip
-
-# Null code assertion http://dartbug.com/23290
-[ $system == windows ]
-coverage_test: Skip
-
-# Issue 23201
-[ $system == windows ]
-debugging_test: Skip
-
-# Tests that depend on token positions (which differ in release mode).
-[ $mode == release ]
-debugging_test: Skip
-
 # Disable on simulators.
 [ $arch == simarm || $arch == simmips || $arch == simarm64]
 *: SkipSlow