Remove unused parameters from InputMethodSubtype#sort()

This CL removes two unused parameters from

  InputMethodService#sort(),

which have never been used since they were initially added [1].

 [1]: I94ad55b8eab49dc9b233dcb4e74429863b406fb4
      7265d9bd

Bug: 234882948
Test: presubmit
Change-Id: I20c9aae92b5c8e455b4c15c6bcec7247738dd88d