fixfiles: drop unnecessary \ line endings #138

Job	Run time
build (gcc, 3.11, 3.1)	1m 32s
build (gcc, 3.11, 3.1, test-flags-override)	1m 20s
build (gcc, 3.11, 3.1, test-debug)	1m 29s
build (gcc, 3.11, 3.1, linker-bfd)	1m 37s
build (gcc, 3.11, 3.1, linker-gold)	1m 52s
build (gcc, 3.10, 3.1)	1m 27s
build (gcc, 3.9, 3.1)	1m 35s
build (gcc, 3.8, 3.1)	1m 37s
build (gcc, 3.7, 3.1)	1m 40s
build (gcc, pypy3.7, 3.1)	2m 8s
build (gcc, 3.11, 3.0)	1m 34s
build (gcc, 3.11, 2.7)	2m 4s
build (gcc, 3.11, 2.6)	1m 43s
build (gcc, 3.11, 2.5)	1m 42s
build (clang, 3.11, 3.1)	1m 40s
build (clang, 3.11, 3.1, test-flags-override)	1m 58s
build (clang, 3.11, 3.1, test-debug)	1m 29s
build (clang, 3.10, 3.1)	1m 45s
build (clang, 3.9, 3.1)	1m 42s
build (clang, 3.8, 3.1)	1m 52s
build (clang, 3.7, 3.1)	2m 18s
build (clang, pypy3.7, 3.1)	2m 10s
build (clang, 3.11, 3.0)	1m 34s
build (clang, 3.11, 2.7)	1m 52s
build (clang, 3.11, 2.6)	1m 50s
build (clang, 3.11, 2.5)	1m 48s
build (gcc, 3.11, 3.1, sanitizers)	1m 57s
	47m 15s

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