diff --git a/lib/rubocop/cop/style/redundant_sort.rb b/lib/rubocop/cop/style/redundant_sort.rb
index e4af9691c17..bf31a01c9fb 100644
--- a/lib/rubocop/cop/style/redundant_sort.rb
+++ b/lib/rubocop/cop/style/redundant_sort.rb
@@ -76,12 +76,8 @@ class RedundantSort < Base
 
         def on_send(node)
           if (sort_node, sorter, accessor = redundant_sort?(node.parent))
-            return if use_size_method_in_block?(sort_node)
-
             ancestor = node.parent
           elsif (sort_node, sorter, accessor = redundant_sort?(node.parent&.parent))
-            return if use_size_method_in_block?(sort_node)
-
             ancestor = node.parent.parent
           else
             return
@@ -92,20 +88,6 @@ def on_send(node)
 
         private
 
-        def use_size_method_in_block?(sort_node)
-          return true if block_calls_send?(sort_node)
-          return false unless sort_node.block_argument?
-
-          sort_node.last_argument.children.first.value == :size
-        end
-
-        def block_calls_send?(node)
-          return false unless node.send_type? && node.block_node
-          return false unless node.block_node.body.send_type?
-
-          node.block_node.body.method?(:size)
-        end
-
         def register_offense(ancestor, sort_node, sorter, accessor)
           message = message(ancestor, sorter, accessor)
 
diff --git a/spec/rubocop/cop/style/redundant_sort_spec.rb b/spec/rubocop/cop/style/redundant_sort_spec.rb
index da7eb3bdce6..f69bd6009c5 100644
--- a/spec/rubocop/cop/style/redundant_sort_spec.rb
+++ b/spec/rubocop/cop/style/redundant_sort_spec.rb
@@ -231,16 +231,6 @@
     expect_no_offenses('[[1, 2], [3, 4]].first.sort')
   end
 
-  # `[2, 1, 3].sort_by(&:size).last` is not equivalent to `[2, 1, 3].max_by(&:size)`.
-  it 'does not register an offense when using `sort_by(&:size).last`' do
-    expect_no_offenses('[2, 1, 3].sort_by(&:size).last')
-  end
-
-  # `[2, 1, 3].sort_by { |i| i.size }.last` is not equivalent to `[2, 1, 3].max_by { |i| i.size }`.
-  it 'does not register an offense when using `sort_by { |i| i.size }.last`' do
-    expect_no_offenses('[2, 1, 3].sort_by { |i| i.size }.last')
-  end
-
   # `[2, 1, 3].sort_by(&:size).first` is not equivalent to `[2, 1, 3].first`, but this
   # cop would "correct" it to `[2, 1, 3].min_by`.
   it 'does not register an offense when sort_by is not given a block' do