Remove one-off task for cleaning Somerville data

lib/tasks/one_off.rake

@@ -1,11 +1,2 @@
 namespace :one_off do
-  task clean_up_somerville: :environment do
-    combined_school = School.find_by_name 'Next Wave/Full Circle'
-    combined_school.update qualtrics_code: 5
-    full_circle = School.find_by_name 'Full Circle High School'
-    next_wave = School.find_by_name 'Next Wave Junior High School'
-    SurveyItemResponse.where(school: [full_circle, next_wave]).update_all school_id: combined_school.id
-    full_circle.destroy!
-    next_wave.destroy!
-  end
 end