Remove the test since it seems unspecified and fixed in later versions

library/openssl/kdf/pbkdf2_hmac_spec.rb

@@ -154,24 +154,6 @@
     }.should raise_error(ArgumentError, 'missing keywords: :salt, :iterations, :length, :hash')
   end
 
-
-  quarantine! do
-    guard -> { OpenSSL::OPENSSL_VERSION_NUMBER < 0x30000000 } do
-      it "treats 0 or less iterations as a single iteration" do
-        salt = "\x00".b * 16
-        length = 16
-        hash = "sha1"
-
-        # "Any iter less than 1 is treated as a single iteration."
-        key0 = OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, iterations: 0)
-        key_negative = OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, iterations: -1)
-        key1 = OpenSSL::KDF.pbkdf2_hmac("secret", **@defaults, iterations: 1)
-        key0.should == key1
-        key_negative.should == key1
-      end
-    end
-  end
-
   guard -> { OpenSSL::OPENSSL_VERSION_NUMBER >= 0x30000000 } do
     it "raises an OpenSSL::KDF::KDFError for 0 or less iterations" do
       -> {