Remove references to non-existing tests from status files.

runtime/observatory/tests/service/service.status

 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # Flaky failures
 vm_timeline_flags_test: Pass, RuntimeError # Issue 26483
 gc_test: Pass, RuntimeError # Issue 26490
 pause_on_start_and_exit_test: Pass, RuntimeError # Issue 26470
 pause_on_start_then_step_test: Pass, RuntimeError # Issue 26470
 # Reload is slow on the bots
@@ skipping 23 matching lines @@
 developer_extension_test: SkipByDesign
 get_isolate_after_language_error_test: SkipByDesign
 
 [ $arch == arm ]
 process_service_test: Pass, Fail # Issue 24344
 
 [ ($noopt || $compiler == precompiler) ]
 *: Skip # Issue 24651
 
 [ $runtime == vm ]
-coverage_test: Pass, Slow
 developer_extension_test: Pass, Fail # Issue 27225
 
 # Service protocol is not supported in product mode.
 [ $mode == product ]
 *: SkipByDesign
 
 # Service protocol is not supported when running a full application snapshot.
 [ $runtime == dart_app ]
 *: SkipByDesign
 
 [ $compiler == dart2analyzer ]
 evaluate_activation_in_method_class_test: CompileTimeError # Issue 24478
 
 [ $arch == simdbc || $arch == simdbc64 ]
 get_allocation_samples_test: RuntimeError # Profiling unimplemented.
 get_cpu_profile_timeline_rpc_test: RuntimeError # Profiling unimplemented.
 implicit_getter_setter_test: RuntimeError # Field guards unimplemented.
 
 [ $hot_reload || $hot_reload_rollback ]
 # Skip all service tests because random reloads interfere.
 *: SkipByDesign # The service tests should run without being reloaded.
 
 [ $system == windows ]
 dev_fs_weird_char_test: Skip # Windows disallows question mark in paths
 dev_fs_http_put_weird_char_test: Skip # Windows disallows carriage returns in paths