Revert "Add UsbDebuggingManager and UsbDebuggingActivity to LegacyUsbManager"

This reverts commit ea45df8f8c9c9cb0809ce6caf71bc55b7667d994.
Revert "Allow system server to bind to USB devices."

This reverts commit e8eea12a24406d7fc41e07a7d21a129c3b60aff9.
Revert "UsbDebuggingManager: Add interface to clear secure adb keys"

This reverts commit cd7a17c645761ac0b64c75346b159dd30cbcb01c.