mtreplay: remove screen_x/y_dpi Remove usage of deprecated `screen_x_dpi` and `screen_y_dpi` fields. BUG=b:260071241 TEST=`FEATURES=test emerge-brya mttools` Cq-Depend: 5436195 Change-Id: Ibe0c8005e3f66854bef55de2b92f7b06544579a6 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/mttools/+/5434142 Commit-Queue: Saketh Pothireddy <[email protected]> Tested-by: Saketh Pothireddy <[email protected]> Reviewed-by: Kenneth Albanowski <[email protected]>