Rename the option remove_platform_without_sites into remove_platform.

The team want to have a more shorter option.

README.adoc

@@ -164,9 +164,9 @@ TIP: 'dev' is the environment to deploy the Drupal installation, see the default
 
 * _Deploy_ the Drupal installation to Aegir
 
- $ fab --set=build_number=1,migrate=true,remove_platform_without_sites=true deploy:dev
+ $ fab --set=build_number=1,migrate=true,remove_platform=true deploy:dev
 
-TIP: 'migrate' and 'remove_platform_without_sites' are optionals parameters but 'build_number' is not, you should pass it always with a different value.
+TIP: 'migrate' and 'remove_platform' are optionals parameters but 'build_number' is not, you should pass it always with a different value.
 
 == Other common tasks
 

deploy.py

@@ -220,7 +220,7 @@ def migrate(environment):
         if env.get('migrate', "false") == "true":
             _aegir_migrate_sites(target, environment, platform)
 
-        if env.get('remove_platform_without_sites', "false") == "true":
+        if env.get('remove_platforms', "false") == "true":
             _aegir_remove_platform_without_sites(target, environment, platform)
     else:
         # Deploy to a Web Server