chore: removing ENABLE_V2_CERT_DISPLAY_SETTINGS (#37302)

the remnants of the logic that used this setting has been gone for a long time.
This removes the toggle.

FIXES: APER-1405

Author: deborahgu

cms/envs/mock.yml

@@ -440,7 +440,6 @@ FEATURES:
   ENABLE_SERVICE_STATUS: true
   ENABLE_SPECIAL_EXAMS: true
   ENABLE_THIRD_PARTY_AUTH: true
-  ENABLE_V2_CERT_DISPLAY_SETTINGS: true
   ENABLE_VERIFIED_CERTIFICATES: true
   ENABLE_VIDEO_ABSTRACTION_LAYER_API: true
   ENABLE_VIDEO_BUMPER: true

lms/envs/mock.yml

@@ -596,7 +596,6 @@ FEATURES:
   ENABLE_SERVICE_STATUS: true
   ENABLE_SPECIAL_EXAMS: true
   ENABLE_THIRD_PARTY_AUTH: true
-  ENABLE_V2_CERT_DISPLAY_SETTINGS: true
   ENABLE_VERIFIED_CERTIFICATES: true
   ENABLE_VIDEO_ABSTRACTION_LAYER_API: true
   ENABLE_VIDEO_BUMPER: true