Revert BC breaking Webmozart-assertions

Author: tvdijen

composer.json

@@ -32,8 +32,7 @@
     },
     "require": {
         "php": ">=5.6",
-        "simplesamlphp/composer-module-installer": "~1.1",
-        "webmozart/assert": "~1.4"
+        "simplesamlphp/composer-module-installer": "~1.1"
     },
     "require-dev": {
         "simplesamlphp/simplesamlphp": "^1.17",

lib/Auth/Ldap.php

@@ -5,8 +5,6 @@
 use SimpleSAML\Error;
 use SimpleSAML\Logger;
 
-use Webmozart\Assert\Assert;
-
 /**
  * Constants defining possible errors
  */
@@ -409,7 +407,6 @@ public function searchformultiple(
                 $filter = ($and ? '(&' : '(|').$filter.')';
             }
         } else {
-            Assert::string($filters);
             $filter = $filters;
         }
 
@@ -857,8 +854,6 @@ public function whoami($searchBase, $searchAttributes)
                 }
             }
         } else {
-            Assert::string($authz_id);
-            /** @var string $authz_id */
             $authz_id = $this->authz_id;
         }