nfc: remove dead wake lock code

com.android.nfc doesn't have unix or selinux permissions to
/sys/power/wake_[un]lock, i.e. all requests for wake locks are no-ops.

Bug: 79940526
Test: walleye boots without this error:
E power   : fatal error opening "/sys/power/wake_lock": Permission denied
Change-Id: I470941788d3d7ca9c8f43df69dc7f873b0814a4f
3 files changed