Refine Java imports

google-java-format fix-imports-only

Skip the following files due to merge conflicts.
src/com/android/nfc/cardemulation/AppChooserActivity.java
src/com/android/nfc/cardemulation/TapAgainDialog.java

Bug: 227027117
Test: build pass
Change-Id: I05f4b39c5a9d35343925bd124fa10cc027e9c47a
32 files changed