[Gardening] Mark language_2/duplicate_implements_impl/{03,04} as passing

Change-Id: I5e478c24a648fde5e374898158543e65ee2360c6
Reviewed-on: https://dart-review.googlesource.com/32768
Reviewed-by: Aske Simon Christensen <[email protected]>

Author: mkustermann

tests/language_2/language_2_kernel.status

@@ -797,8 +797,6 @@ class_cycle_test/02: MissingCompileTimeError # Please triage.
 class_cycle_test/03: MissingCompileTimeError # Please triage.
 duplicate_implements_test/01: MissingCompileTimeError # Please triage.
 duplicate_implements_test/02: MissingCompileTimeError # Please triage.
-duplicate_implements_test/03: MissingCompileTimeError # Please triage.
-duplicate_implements_test/04: MissingCompileTimeError # Please triage.
 generic_methods_generic_function_result_test/01: MissingCompileTimeError # Please triage.
 issue23244_test: RuntimeError # Please triage.
 least_upper_bound_expansive_test/none: RuntimeError # Please triage.