Use API Level 16 method for creating a MIME NDEF record

When writing a profile ID to an NFC tag to have it trigger a profile change,
use the NdefRecord.createMime()-method instead of manually creating the NDEF
record.

Change-Id: Iaa1f105c3f0b46a1d672e96224eafea4fd99d7d5
Remove double ProfilesSettings activity