Force reset displayId for secondary display

Rebooting the framework will allocate two new secondary displays.
But the previous allocated displays still exits.
So, delete the previous allocatd displays when allocating new ones.

Bug: 149930332

Test: lunch gcar_hl_md_emu_x86-userdebug; m -j;
run emualtor, adb reboot

Change-Id: I8d506b15bb3d28d53fafa2657325ad1ef9c2d0dd
2 files changed