Run autocorrectable rubocop errors

Author: moleske

lib/cloud_controller/check_stacks.rb

@@ -19,7 +19,7 @@ def validate_stacks
 
     def validate_stack(deprecated_stack)
       configured_stacks = @stack_config.stacks
-      deprecated_stack_in_config = (configured_stacks.find { |stack| stack['name'] == deprecated_stack }).present?
+      deprecated_stack_in_config = configured_stacks.find { |stack| stack['name'] == deprecated_stack }.present?
       return if deprecated_stack_in_config
 
       no_deprecated_stack_in_db = @db.fetch('SELECT 1 FROM stacks WHERE name LIKE ? ', deprecated_stack).empty?

spec/unit/lib/cloud_controller/integer_array_serializer_spec.rb

@@ -11,15 +11,15 @@ class Foo; extend IntegerArraySerializer; end
       let(:serializer) { IntegerArraySerializer.serializer }
 
       it 'raises an error when not passed an array' do
-        (expect { serializer.call('hello') }).to raise_error(ArgumentError, 'Integer array columns must be passed an array')
+        expect { serializer.call('hello') }.to raise_error(ArgumentError, 'Integer array columns must be passed an array')
       end
 
       it 'raises an error when not passed an array of integers' do
-        (expect { serializer.call([1, 2, 'derp']) }).to raise_error(ArgumentError, 'All members of the array must be integers')
+        expect { serializer.call([1, 2, 'derp']) }.to raise_error(ArgumentError, 'All members of the array must be integers')
       end
 
       it 'does not raise an error if passed nil' do
-        (expect { serializer.call(nil) }).not_to raise_error
+        expect { serializer.call(nil) }.not_to raise_error
       end
 
       it 'munges arrays to be in an expected comma-separated format' do