Allow shell to remove pkgs from powersave-temp-whitelist.

Bug: 69365569
Test: cts-tradefed run singleCommand cts-dev -m CtsAppTestCases -t \
      android.app.cts.ActivityManagerProcessStateTest
Test: manual
Change-Id: Iebf782ab1033e5bcbe320ce4006d051ca260017e
1 file changed