chromeos: Remove unused CrosAddIPConfig/CrosRemoveIPConfig functions

chrome/browser/chromeos/cros/cros_network_functions.h

Index: chrome/browser/chromeos/cros/cros_network_functions.h
diff --git a/chrome/browser/chromeos/cros/cros_network_functions.h b/chrome/browser/chromeos/cros/cros_network_functions.h
index a850d5127824a1d29ccd96b8320ce5806fb4341f..7543e9a8c0198ef19fd0912eabf1729e872fa69d 100644
--- a/chrome/browser/chromeos/cros/cros_network_functions.h
+++ b/chrome/browser/chromeos/cros/cros_network_functions.h
@@ -272,12 +272,6 @@ bool CrosListIPConfigs(const std::string& device_path,
                        std::vector<std::string>* ipconfig_paths,
                        std::string* hardware_address);
 
-// Adds a IPConfig of the given type to the device
-bool CrosAddIPConfig(const std::string& device_path, IPConfigType type);
-
-// Removes an existing IP Config
-bool CrosRemoveIPConfig(const std::string& ipconfig_path);
-
 // Refreshes the IP config |ipconfig_path| to pick up changes in
 // configuration, and renew the DHCP lease, if any.
 void CrosRequestIPConfigRefresh(const std::string& ipconfig_path);