Make oneway calls from AFM to AFMS.

AFM should not block the UI thread when calling AFMS; this CL is a
"low-hanging fruit" change that makes oneway call from the existing functions
that return void.

Test: mmma -j ./frameworks/base/apct-tests/perftests/autofill/ && \
  adb install -r $OUT/data/app/AutofillPerfTests/AutofillPerfTests.apk && \
  adb shell am instrument -w -e class android.view.autofill.LoginTest \
  com.android.perftests.autofill/android.support.test.runner.AndroidJUnitRunner
Test: CtsAutoFillServiceTestCases

Bug: 73536867

Change-Id: I09e84b797153cd02d3c02262994a2be1f38639ea