Backed out changeset 6f205bfdd139 (bug 1411796) for failing e.g. taskgraph's taskcluster/taskgraph/test/test_generator.py::TestGenerator::test_full_task_graph. r=backout on a CLOSED TREE

taskcluster/taskgraph/generator.py

@@ -291,9 +291,6 @@ class TaskGraphGenerator(object):
         return self._run_results[name]
 
     def verify_parameters(self, parameters):
-        if not parameters.strict:
-            return
-
         parameters_dict = dict(**parameters)
         verify_docs(
             filename="parameters.rst",