dbex/97932-claims-api: set claims api only (#19938)

app/controllers/v0/disability_compensation_forms_controller.rb

@@ -123,7 +123,7 @@ def create_submission(saved_claim)
         saved_claim_id: saved_claim.id,
         auth_headers_json: auth_headers.to_json,
         form_json: saved_claim.to_submission_data(@current_user),
-        submit_endpoint: includes_toxic_exposure? ? 'claims_api' : 'evss'
+        submit_endpoint: 'claims_api'
       ) { |sub| sub.add_birls_ids @current_user.birls_id }
 
       if missing_disabilities?(submission)
@@ -162,11 +162,6 @@ def stats_key
       'api.disability_compensation'
     end
 
-    def includes_toxic_exposure?
-      # any form that has a startedFormVersion (whether it is '2019' or '2022') will go through the Toxic Exposure flow
-      form_content['form526']['startedFormVersion']
-    end
-
     def missing_disabilities?(submission)
       if submission.form['form526']['form526']['disabilities'].none?
         StatsD.increment("#{stats_key}.failure")