Remove redundant expect_no_offenses keyword arguments

This commit removes the following redundant `expect_no_offenses` keyword arguments:

```console
$ bundle exec rubocop
(snip)

Offenses:

spec/rubocop/cop/rails/save_bang_spec.rb:175:35:
C: [Correctable] InternalAffairs/RedundantExpectOffenseArguments: Remove the redundant arguments.
        expect_no_offenses(<<~RUBY, method: method)
                                  ^^^^^^^^^^^^^^^^
spec/rubocop/cop/rails/save_bang_spec.rb:291:33:
C: [Correctable] InternalAffairs/RedundantExpectOffenseArguments: Remove the redundant arguments.
      expect_no_offenses(<<~RUBY, method: method)
                                ^^^^^^^^^^^^^^^^

292 files inspected, 2 offenses detected, 2 offenses autocorrectable
```

Author: koic

spec/rubocop/cop/rails/save_bang_spec.rb

@@ -172,7 +172,7 @@
 
     it "when using #{method} wrapped within parenthesis with if" do
       if update
-        expect_no_offenses(<<~RUBY, method: method)
+        expect_no_offenses(<<~RUBY)
           if (object.#{method}); something; end
         RUBY
       else
@@ -288,7 +288,7 @@
     end
 
     it "when using #{method} with a bunch of hashes & arrays" do
-      expect_no_offenses(<<~RUBY, method: method)
+      expect_no_offenses(<<~RUBY)
         return [{ success: object.#{method} }, true]
       RUBY
     end