CatalogResolver no longer uses FileSystem.getInputStream(String, String).

Instead, in a first step a URL is retrieved via FileLocatorUtils.locate(). Then
from the URL an input stream is opened. After this change, FileSystem's
getInputStream(String, String) method is no longer used.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1522004 13f79535-47bb-0310-9956-ffa450edef68
Removed getInputStream(String, String) method from FileSystem.

This method is no longer called by any component.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1522005 13f79535-47bb-0310-9956-ffa450edef68