Remove a couple of LMK properties from GSI image

These two properties shouldn't be set in GSI image from R on,
otherwise they'll force lmkd to use the legacy strategy.

Bug: 136212765
Test: run cts-on-gsi -m CtsFileSystemTestCases
Test: run cts-on-gsi -m CtsAppExitTestCases
Change-Id: Id0001f8c4187a280cffe6c72d7a39be29065ca4e
Merged-In: Id0001f8c4187a280cffe6c72d7a39be29065ca4e
(cherry picked from commit 5f97d6d2)