linux

Remove unused variables #17590

Job	Run time
chromium_linux-x64 / initialize	1m 21s
linux / initialize	1m 15s
linux-evergreen / initialize	1m 15s
linux / docker-build-image	3m 59s
linux-evergreen / docker-build-image	4m 54s
chromium_linux-x64 / docker-build-image	4m 5s
linux / x64_devel	17m 57s
linux / x64_qa	23m 20s
linux / x64_gold	22m 24s
chromium_linux-x64 / x64_devel	18m 6s
chromium_linux-x64 / x64_qa	24m 3s
chromium_linux-x64 / x64_gold	23m 55s
linux-evergreen / x64_devel	8m 3s
linux-evergreen / x64_qa	9m 18s
linux-evergreen / x64_gold	8m 59s
linux-evergreen / ${{ matrix.name }}_tests	0s
linux / x64_tests	7m 4s
chromium_linux-x64 / ${{ matrix.name }}_tests	0s
	2h 59m 58s

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