Add and apply Style/RedundantBegin rubocop rule

We're about to add code which might fall into the `RedundantBegin`
category, so we're adding the rule in order to prevent that.

.rubocop.yml

@@ -781,6 +781,9 @@ Style/RaiseArgs:
 Style/RedundantArgument:
   Enabled: true
 
+Style/RedundantBegin:
+  Enabled: true
+
 Style/RedundantCondition:
   Enabled: true
 

app/controllers/graphql_controller.rb

@@ -9,7 +9,6 @@ class GraphqlController < ApplicationController
   class QueryStringError < StandardError; end
 
   def execute
-    begin
     raise GraphqlController::QueryStringError if query_string.nil?
 
     result = ConsulSchema.execute(
@@ -28,7 +27,6 @@ class GraphqlController < ApplicationController
   rescue ArgumentError => e
     render json: { message: e.message }, status: :bad_request
   end
-  end
 
   private
 

app/models/legislation/annotation.rb

@@ -25,7 +25,6 @@ class Legislation::Annotation < ApplicationRecord
   end
 
   def store_context
-    begin
     html = draft_version.body_html
     doc = Nokogiri::HTML(html)
 
@@ -42,7 +41,6 @@ class Legislation::Annotation < ApplicationRecord
   rescue
     "<span class=annotator-hl>#{quote}</span>"
   end
-  end
 
   def create_first_comment
     comments.create(body: text, user: author)

app/models/machine_learning.rb

@@ -15,7 +15,6 @@ class MachineLearning
   end
 
   def run
-    begin
     export_proposals_to_json
     export_budget_investments_to_json
     export_comments_to_json
@@ -66,7 +65,6 @@ class MachineLearning
     handle_error(e)
     raise e
   end
-  end
   handle_asynchronously :run, queue: "machine_learning"
 
   class << self

config/deploy.rb

@@ -84,7 +84,6 @@ end
 task :install_ruby do
   on roles(:app) do
     within release_path do
-      begin
       current_ruby = capture(:rvm, "current")
     rescue SSHKit::Command::Failed
       after "install_ruby", "rvm1:install:rvm"
@@ -99,12 +98,10 @@ task :install_ruby do
     end
   end
 end
-end
 
 task :install_node do
   on roles(:app) do
     with rails_env: fetch(:rails_env) do
-      begin
       execute fetch(:fnm_install_node_command)
     rescue SSHKit::Command::Failed
       begin
@@ -119,7 +116,6 @@ task :install_node do
     end
   end
 end
-end
 
 task :map_node_bins do
   on roles(:app) do

spec/controllers/officing/voters_controller_spec.rb

@@ -11,14 +11,12 @@ describe Officing::VotersController do
 
       2.times.map do
         Thread.new do
-          begin
           post :create, params: {
             voter: { poll_id: poll.id, user_id: user.id },
             format: :js
           }
         rescue ActionDispatch::IllegalStateError
         end
-        end
       end.each(&:join)
 
       expect(Poll::Voter.count).to eq 1

spec/controllers/polls/answers_controller_spec.rb

@@ -8,7 +8,6 @@ describe Polls::AnswersController do
 
       2.times.map do
         Thread.new do
-          begin
           post :create, params: {
             question_id: question.id,
             option_id: question.question_options.find_by(title: "Answer A").id,
@@ -16,7 +15,6 @@ describe Polls::AnswersController do
           }
         rescue ActionDispatch::IllegalStateError, ActiveRecord::RecordInvalid
         end
-        end
       end.each(&:join)
 
       expect(Poll::Answer.count).to eq 1

spec/models/poll/answer_spec.rb

@@ -187,11 +187,9 @@ describe Poll::Answer do
 
       [answer, other_answer].map do |poll_answer|
         Thread.new do
-          begin
           poll_answer.save_and_record_voter_participation
         rescue ActiveRecord::RecordInvalid
         end
-        end
       end.each(&:join)
 
       expect(Poll::Voter.count).to be 1

spec/support/common_actions/graphql_api.rb

@@ -18,14 +18,12 @@ module GraphQLAPI
   def extract_fields(response, collection_name, field_chain)
     fields = field_chain.split(".")
     dig(response, "data.#{collection_name}.edges").map do |node|
-      begin
       if fields.size > 1
         node["node"][fields.first][fields.second]
       else
         node["node"][fields.first]
       end
     rescue NoMethodError
-      end
     end.compact
   end
 end