Removed unused function in uniform airflow

In this changeset, I removed 2 unused methods.

Change-Id: I2e85ed63739f9bb436d110b54fe2b9ef10962205

watcher/decision_engine/strategy/strategies/uniform_airflow.py

@@ -106,14 +106,6 @@ class UniformAirflow(base.BaseStrategy):
     def get_goal_name(cls):
         return "airflow_optimization"
 
-    @classmethod
-    def get_goal_display_name(cls):
-        return _("Airflow optimization")
-
-    @classmethod
-    def get_translatable_goal_display_name(cls):
-        return "Airflow optimization"
-
     @classmethod
     def get_schema(cls):
         # Mandatory default setting for each element