introspector: remove old misleading comment (#590)

no longer relevant as of #578

data_prep/introspector.py

@@ -774,11 +774,6 @@ def populate_benchmarks_using_introspector(project: str, language: str,
                                            target_oracles: List[str]):
   """Populates benchmark YAML files from the data from FuzzIntrospector."""
 
-  # If there is any oracle with test-migration then only do this oracle
-  # selection, because the benchmarks will have different .yaml structure.
-  # TODO(David): clean up benchmark code to make it more flexible for varying
-  # forms of target selectors, and potential mixing both types of target
-  # selectors.
   potential_benchmarks = []
   for target_oracle in target_oracles:
     if 'test-migration' in target_oracle: