Revert "n7100: add NFC Host-based card emulation"

Goddamnit, people are merging untested crap now.

All of the 4412 family have NXP (not Broadcom/NCI) NFC controllers, which don't actually support HCE.

GW will report that tap-to-pay is ready but it won't actually work.

This reverts commit 3379ad286b4fd9c26de1f628a1e777a5cb7001db.

Change-Id: I00418fd993b52c6a0466d38db5ebe8e9646d45c8