Revert r47971, r47972 [ruby-core:65764]

The current implementation currently delivers signals to self
immediately and synchronously, so we do not need explicit,
potentially-confusing sleeps to wait for signal delivery.

* test/-ext-/bug_reporter/test_bug_reporter.rb
  (test_bug_reporter_add): revert r47972
* test/ruby/test_rubyoptions.rb (test_segv_test): revert r47971
  [ruby-core:65764]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47985 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-10-17

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47986 b2dd03c8-39d4-4d8f-98ff-823fe69b080e