nwztools: remove NW-ZX2

It is Android based and despite the fact that Sony wrote an NVP driver for it,
experiments suggest it is unused because it returns ff all the time...

Change-Id: I37750b659e341b21bed5ebaccf60f9f5fe569f64

utils/nwztools/database/nvp/nwz-zx2.txt

@@ -1,90 +0,0 @@
-dbg,000
-bti,001
-hdi,002
-cng,003
-ser,004
-app,005
-eri,006
-dcc,007
-mdl,008
-fup,009
-bok,010
-shp,011
-dba,012
-dbv,013
-tr0,014
-tr1,015
-mid,016
-tst,017
-gty,018
-fui,019
-lbi,020
-dor,021
-edw,022
-ubp,023
-syi,024
-exm,025
-pcd,026
-cgp,027
-rnd,028
-ufn,029
-sdp,030
-ncp,031
-kas,032
-sfi,033
-rtc,034
-bpr,035
-e00,036
-e01,037
-e02,038
-e03,039
-e04,040
-e05,041
-e06,042
-e07,043
-e08,044
-e09,045
-e10,046
-e11,047
-e12,048
-e13,049
-e14,050
-e15,051
-e16,052
-e17,053
-e18,054
-e19,055
-e20,056
-e21,057
-e22,058
-e23,059
-e24,060
-e25,061
-e26,062
-e27,063
-e28,064
-e29,065
-e30,066
-e31,067
-clv,068
-slp,069
-ipt,070
-mtm,071
-mcr,072
-mdk,073
-muk,074
-pts,075
-skt,076
-mac,077
-apd,078
-blf,079
-hld,080
-skd,081
-fmp,082
-sps,083
-msc,084
-vrt,085
-psk,086
-bml,087
-bfd,088
-bfp,089