Resolves rubocop offense Style/RedundantSelfAssignment

Fixes auto correct rubocop offenses

.rubocop_todo.yml

@@ -927,13 +927,6 @@ Style/RedundantRegexpEscape:
 Style/RedundantSelf:
   Enabled: false
 
-# Offense count: 2
-# Cop supports --auto-correct.
-Style/RedundantSelfAssignment:
-  Exclude:
-    - 'app/models/concerns/issuable.rb'
-    - 'spec/db/schema_spec.rb'
-
 # Offense count: 213
 # Cop supports --auto-correct.
 # Configuration parameters: EnforcedStyle, AllowInnerSlashes.

app/models/concerns/issuable.rb

@@ -324,7 +324,7 @@ module Issuable
       # This prevents errors when ignored columns are present in the database.
       issuable_columns = with_cte ? issue_grouping_columns(use_cte: with_cte) : "#{table_name}.*"
 
-      extra_select_columns = extra_select_columns.unshift("(#{highest_priority}) AS highest_priority")
+      extra_select_columns.unshift("(#{highest_priority}) AS highest_priority")
 
       select(issuable_columns)
         .select(extra_select_columns)

changelogs/unreleased/pl-rubocop-todo-redundant-self-assignment.yml

+---
+title: Fixes rubocop offenses Style/RedundantSelfAssignment
+merge_request:
+author: Shubham Kumar (@imskr)
+type: fixed

spec/db/schema_spec.rb

@@ -115,7 +115,7 @@ RSpec.describe 'Database schema' do
             # postgres and mysql both automatically create an index on the primary
             # key. Also, the rails connection.indexes() method does not return
             # automatically generated indexes (like the primary key index).
-            first_indexed_column = first_indexed_column.push(primary_key_column)
+            first_indexed_column.push(primary_key_column)
 
             expect(first_indexed_column.uniq).to include(*foreign_keys_columns)
           end