Update concurrency in python example

Python/testing-sdk-with-prompt-sdk/my_project/test_suites/flashcard_generator/__init__.py

@@ -24,5 +24,4 @@ def run():
         ],
         fn=test_fn,
         max_test_case_concurrency=5,
-        max_evaluator_concurrency=1,
     )

Python/testing-sdk-with-prompt-sdk/my_project/test_suites/study_guide_outline/__init__.py

@@ -23,5 +23,4 @@ def run():
         ],
         fn=test_fn,
         max_test_case_concurrency=5,
-        max_evaluator_concurrency=2,
     )

Python/testing-sdk/my_project/test_suites/flashcard_generator/__init__.py

@@ -24,5 +24,4 @@ def run():
         ],
         fn=test_fn,
         max_test_case_concurrency=5,
-        max_evaluator_concurrency=1,
     )

Python/testing-sdk/my_project/test_suites/flashcard_generator/evaluators.py

@@ -14,6 +14,8 @@
 class IsProfessionalTone(BaseTestEvaluator):
     id = "is-professional-tone"
 
+    max_concurrency = 2
+
     prompt = """Please evaluate the provided text for its professionalism in the context of formal communication.
 Consider the following criteria in your assessment:
 
@@ -72,6 +74,8 @@ async def evaluate_test_case(
 class IsSupportedByNotes(BaseTestEvaluator):
     id = "is-supported-by-notes"
 
+    max_concurrency = 2
+
     prompt = """Given some notes by a student and a flashcard in the form of a question and answer, evaluate whether the flashcard's question and answer are supported by the notes.
 It's possible the question and answer aren't in the notes verbatim.
 If the notes provide enough context or information to support the question and answer, consider that sufficient support.

Python/testing-sdk/my_project/test_suites/study_guide_outline/__init__.py

@@ -23,5 +23,4 @@ def run():
         ],
         fn=test_fn,
         max_test_case_concurrency=5,
-        max_evaluator_concurrency=2,
     )