Remove redundant files around fp2.mk

fp2.mk was never included in the build. The files it refers to (via
COPY) are not included elsewhere; however, their content seems to be
included elsewhere as far as relevant. Product packages added by this
file are all included in either the fp2-common device config or GMS
vendor config.

Drop all these files to make the device config less confusing.

Issue: FP2P-473
Change-Id: I5bde89bbf46cbf809ec9119a4afd065453d8133c
5 files changed