Revert "Merge remote branch 'lsmith77/prevent_redundant_DI_method_cal…

…ls'"

This reverts commit 0d61ae0, reversing
changes made to 8e3d125.

src/Symfony/Component/DependencyInjection/InterfaceInjector.php

@@ -76,9 +76,7 @@ public function processDefinition(Definition $definition, $class = null)
 
         foreach ($this->calls as $callback) {
             list($method, $arguments) = $callback;
-            if (!$definition->hasMethodCall($method)) {
-                $definition->addMethodCall($method, $arguments);
-            }
+            $definition->addMethodCall($method, $arguments);
         }
 
         $this->processedDefinitions[] = $definition;