I want to reject binary which is waiting for review and when I go to the path that Developer Guide specifies I can\'t find the button to reject the binary.
As a few people have commented/upvoted on @ThomasRS's accepted answer, for whatever reason, even though my app's status was "Waiting for review", the blue bar with the "To submit a new build, you must remove this version from review" message did not appear on the iTunes Connect website on my app's "Waiting for review" version page.
However, I did see a "Reject this binary" link in the iTunes Connect iOS application:
Steps to access that page: