removed unnecessary checks in Config

Mage/Config.php

@@ -170,14 +170,10 @@ class Config
     {
     	$environment = $this->getEnvironment();
 
+        if(!empty($environment))
+        {
             $configFilePath = getcwd() . '/.mage/config/environment/' . $environment . '.yml';
 
-        $parameters = $this->getParameters();
-
-        if (empty($environment) && (!empty($parameters) || !$this->isRunInSpecialMode($parameters))) {
-        		throw new RuntimeException('Environment is not set');
-        }
-
             try {
                 $this->environmentConfig =  $this->loadEnvironment($configFilePath);
             } catch (ConfigNotFoundException $e) {
@@ -185,6 +181,7 @@ class Config
             }
 
         }
+    }
 
     /**
      *