Remove unused variables

Author: davidlibrera

lib/onelogin/ruby-saml/response.rb

@@ -289,7 +289,6 @@ def issuers
             raise ValidationError.new(error_msg)
           end
 
-          _doc = decrypted_document.nil? ? document : decrypted_document
           issuer_assertion_nodes = xpath_from_signed_assertion("/a:Issuer")
           unless issuer_assertion_nodes.size == 1
             error_msg = "Issuer of the Assertion not found or multiple."

lib/xml_security.rb

@@ -318,7 +318,6 @@ def validate_signature(base64_cert, soft = true)
 
       # check digests
       ref = REXML::XPath.first(sig_element, "//ds:Reference", {"ds"=>DSIG})
-      _uri = ref.attributes.get_attribute("URI").value
 
       hashed_element = document.at_xpath("//*[@ID=$id]", nil, { 'id' => extract_signed_element_id })