Delete inherited tools/rimage/.gitignore #782

Job	Run time
build-windows (imx8 imx8x imx8m)	13m 35s
build-linux (mnfst, imx8 imx8x imx8m)	7m 15s
build-windows (mtl)	12m 21s
build-linux (mnfst, mtl)	7m 34s
build-windows (tgl tgl-h)	13m 57s
build-linux (mnfst, lnl)	5m 32s
build-windows (-d, mtl)	12m 24s
build-linux (mnfst, tgl tgl-h)	9m 9s
build-linux (zmain, imx8 imx8x imx8m)	5m 43s
build-linux (zmain, mtl)	5m 34s
LP64-WIP	4m 46s
build-linux (zmain, lnl)	5m 29s
build-linux (zmain, tgl tgl-h)	7m 43s
manifest-check	1m 0s
build-linux (-d, mnfst, mtl)	7m 28s
compare-linux-win	40s
	2h 0m 10s

Provide feedback