Revert "Skip a new test when old OpenSSL"

This reverts commit 8c96a69.

This is no longer necessary since we do not support OpenSSL 1.1.0
anymore.

Author: rhenium

test/openssl/test_ssl.rb

@@ -1884,10 +1884,6 @@ def test_ciphers_method_frozen_object
   end
 
   def test_ciphers_method_bogus_csuite
-    omit "Old #{OpenSSL::OPENSSL_LIBRARY_VERSION}" if
-      year = OpenSSL::OPENSSL_LIBRARY_VERSION[/\A OpenSSL\s+[01]\..*\s\K\d+\z/x] and
-      year.to_i <= 2018
-
     ssl_ctx = OpenSSL::SSL::SSLContext.new
 
     assert_raise_with_message(