Fix codesniffer errors

Author: tvdijen

phpcs.xml

@@ -41,6 +41,8 @@
         <exclude-pattern>tests/SAML2/XML/saml/AuthnContextTest.php</exclude-pattern>
         <exclude-pattern>tests/SAML2/XML/saml/EncryptedAssertionTest.php</exclude-pattern>
         <exclude-pattern>tests/SAML2/XML/saml/EncryptedIDTest.php</exclude-pattern>
+        <exclude-pattern>tests/SAML2/XML/saml/SubjectConfirmationTest.php</exclude-pattern>
+        <exclude-pattern>tests/SAML2/XML/samlp/AuthnRequestTest.php</exclude-pattern>
         <exclude-pattern>tests/SAML2/XML/samlp/RequestedAuthnContextTest.php</exclude-pattern>
         <exclude-pattern>tests/SAML2/XML/samlp/StatusDetailTest.php</exclude-pattern>
         <exclude-pattern>tests/SAML2/XML/shibmd/KeyAuthorityTest.php</exclude-pattern>

tests/SAML2/Binding/HTTPRedirectTest.php

@@ -16,8 +16,6 @@
 use SimpleSAML\SAML2\XML\saml\Issuer;
 use SimpleSAML\SAML2\XML\samlp\{AbstractRequest, AuthnRequest, Response, Status, StatusCode};
 use SimpleSAML\XML\Type\IDValue;
-use SimpleSAML\XMLSecurity\Alg\Signature\SignatureAlgorithmFactory;
-use SimpleSAML\XMLSecurity\TestUtils\PEMCertificatesMock;
 
 /**
  * @package simplesamlphp\saml2