support prompt template loading

tests/unit/test_domain.py

@@ -1,21 +1,7 @@
 import pytest
-from src.text_generation.domain.average import Average
 from src.text_generation.domain.guardrail_analyzed_response import GuardrailAnalyzedResponse
 
 
-@pytest.mark.unit
-def test_get_average():
-    scores = [
-        0.12765,
-        0.00282,
-        0.63945,
-        0.97123,
-        0.38921
-    ]
-    avg_1 = Average().from_list_of_floats(scores)
-    assert avg_1 == 0.426072
-
-
 @pytest.mark.unit
 def test_guardrail_analyzed_response():
     response = GuardrailAnalyzedResponse(