Update the javadoc for Passpoint APIs to remove @throws UnsupportedOperation Exception when the Passpoint is not enabled on the device. Bug: 121078741 Test: ./frameworks/base/wifi/tests/runtests.sh Change-Id: I087a595c04b926a76b6ea9d6f2a475e12033815b Signed-off-by: Ecco Park <eccopark@google.com>