[Zuma] Unset mte_tcf_preferred

Reverting to all-async configuration according to PoR.

Bug: 280343521
Test: adb shell setprop persist.device_config.runtime_native_boot.bootloader_override force_on
      adb reboot
      adb shell 'cat /sys/devices/system/cpu/cpu?/mte_tcf_preferred'
          should return all "async"
Change-Id: Ic42cc8102ff55348dd9061682a779d9dde6ee02c