Move removed.txt files to android-removed.txt

This matches the rest of the <m>-removed.txt files.

$ for f in */*/api/removed.txt; do
    mv $f ${f%removed.txt}android-removed.txt;
  done

Test: presubmit
Change-Id: I807e663658f1b414c55290e2836384254c1a25c9
15 files changed