Remove unused classes and tests.

Old usb pages have been replaced by UsbDetailsFragment
and UsbDefaultFragment. Old connected devices has
been replaced by new connected devices.

Bug: 70848054
Test: Passes
Change-Id: I538cbb88d4f878449a83da9a4a0381e74e840c6a
diff --git a/src/com/android/settings/SettingsActivity.java b/src/com/android/settings/SettingsActivity.java
index 3144ae2..63214d5 100644
--- a/src/com/android/settings/SettingsActivity.java
+++ b/src/com/android/settings/SettingsActivity.java
@@ -631,19 +631,10 @@
                 Utils.isBandwidthControlEnabled() /* enabled */,
                 isAdmin) || somethingChanged;
 
-        final boolean isConnectedDeviceV2Enabled =
-                Settings.ConnectedDeviceDashboardActivity.isEnabled();
-        // Enable new connected page if v2 enabled
         somethingChanged = setTileEnabled(
                 new ComponentName(packageName,
                         Settings.ConnectedDeviceDashboardActivity.class.getName()),
-                isConnectedDeviceV2Enabled && !UserManager.isDeviceInDemoMode(this) /* enabled */,
-                isAdmin) || somethingChanged;
-        // Enable old connected page if v2 disabled
-        somethingChanged = setTileEnabled(
-                new ComponentName(packageName,
-                        Settings.ConnectedDeviceDashboardActivityOld.class.getName()),
-                !isConnectedDeviceV2Enabled && !UserManager.isDeviceInDemoMode(this) /* enabled */,
+                !UserManager.isDeviceInDemoMode(this) /* enabled */,
                 isAdmin) || somethingChanged;
 
         somethingChanged = setTileEnabled(new ComponentName(packageName,