feat(translations): remove BE component translation keys

Author: adi-herwana-nus

config/locales/en/activerecord/course/assessment/category.yml

@@ -2,7 +2,7 @@ en:
   activerecord:
     attributes:
       course/assessment/category/title:
-        default: :'course.assessment.assessments.index.header'
+        default: 'Assessments'
       course/assessment/category:
         weight: 'Order'
     errors:

config/locales/en/components.yml

@@ -3,9 +3,6 @@ en:
     assessment:
       assessments:
         invalid_questions_order: 'Invalid ordering for assessment questions'
-        sidebar_title: :'course.assessment.assessments.index.header'
-        index:
-          header: 'Assessments'
         show:
           public_test: 'Public'
           private_test: 'Private'