Remove debug selector tests.

Author: ioquatix

spec/async/rspec/reactor_spec.rb

@@ -51,26 +51,6 @@
 # end
 end
 
-context "debug selector" do
-include_context Async::RSpec::Reactor
-
-it "should fail if registering the same io twice" do
-input, output = IO.pipe.map{|io| Async::IO::Generic.new(io)}
-
-reactor.async do
-input.read
-end
-
-expect do
-input.read
-end.to raise_error(/already registered|already waiting/)
-
-ensure
-input&.close
-output&.close
-end
-end
-
 context "timeouts", timeout: 1 do
 include Async::RSpec::Reactor