jflte: clean up prop extraction process

* don't kill the blobs/ dir on /system so that it may be pulled
  from via extract_files
* this allows us to clean up the amazing mess i've created for
  the entire extract_files process

Change-Id: Ib93061faa693abf9762e56016c0b825a2494a3d4
jflteatt: Update init to I337UCUFNB1 (4.4.2)

This also aligns the ro.product.model with stock.

Change-Id: Ib783eaa3a4bc052704efeae99e0bc45fbc2aa1ab
Revert "init: enable auto-loki for att and vzw variants"

* not ready yet, causes loki to be run on devices that don't need it
* will unrevert when this is merged:
  http://review.cyanogenmod.org/#/c/59620/

This reverts commit 472729138ddf1bb5f97dafaf1b270cb158841801.

Change-Id: Ia1129774196a412ae1e7d589a091dba7443e41bb
jflte: restore pre-unification vzw home operator prop

jfltevzw's default.prop set ro.cdma.home.operator.numeric to 311480
jflte's unified init sets the prop to 310004 for phones formerly known as jfltevzw.

Change-Id: I3c3a5e6c6783cc31c931b4699b9d2456a69b1e8e
jflte: remove network_mode.xml overlay

Change-Id: Id528397699df45a1efcd983d4f196e3638225e5a
props for jflteusc

Change-Id: Iaa7a8341d50909761ee0aa947cd84e6dea407310
Revert "props for jflteusc"

This reverts commit a489b849449103b49ea8bee522da043905ac13d7.

Change-Id: I60b3b72e0e00cfe2dbd65fe1b50186f822987f69