Remove starboard/common/file usage above Starboard. #13258

Job	Run time
raspi-2 / initialize	50s
raspi-2-skia / initialize	46s
raspi-2-skia / docker-build-image	1m 22s
raspi-2-skia / docker-unittest-image	0s
raspi-2 / docker-build-image	1m 23s
raspi-2 / docker-unittest-image	0s
raspi-2-skia / raspi-2-skia_devel	12m 23s
raspi-2-skia / raspi-2-skia_debug	13m 58s
raspi-2-skia / raspi-2-skia_qa	7m 49s
raspi-2-skia / raspi-2-skia_gold	7m 53s
raspi-2 / raspi_devel	9m 9s
raspi-2 / raspi_debug	12m 46s
raspi-2 / raspi_qa	7m 57s
raspi-2 / raspi_gold	7m 37s
raspi-2 / sbversion-15_devel	9m 23s
raspi-2 / sbversion-15_debug	13m 6s
raspi-2 / sbversion-15_qa	8m 18s
raspi-2 / sbversion-15_gold	7m 50s
raspi-2 / sbversion-16_devel	8m 50s
raspi-2 / sbversion-16_debug	13m 2s
raspi-2 / sbversion-16_qa	8m 14s
raspi-2 / sbversion-16_gold	7m 41s
raspi-2 / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2 / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
raspi-2-skia / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2-skia / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
	2h 40m 17s

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