for clarity drop outdated support for rails < 6.0

Author: timdiggins

lib/rspec/rails/example/system_example_group.rb

@@ -108,9 +108,7 @@ def driven_by(driver, **driver_options, &blk)
           orig_stdout = $stdout
           $stdout = StringIO.new
           begin
-            if ::Rails::VERSION::STRING >= '6.0'
-              original_before_teardown.bind(self).call
-            end
+            original_before_teardown.bind(self).call
             original_after_teardown.bind(self).call
           ensure
             myio = $stdout