Extract method for _strip_comments. Reduces complexity by 7. #10

Job	Run time
i686-pc-windows-msvc/msvc (Debug)	17m 3s
i686-pc-windows-msvc/msvc (Release)	20m 45s
x86_64-pc-windows-msvc/msvc (Debug)	17m 15s
x86_64-pc-windows-msvc/msvc (Release)	22m 14s
aarch64-pc-windows-msvc/msvc (Debug)	5m 20s
aarch64-pc-windows-msvc/msvc (Release)	6m 3s
x86_64-apple-darwin/clang (Debug)	10m 55s
x86_64-apple-darwin/clang (Release)	14m 53s
aarch64-apple-darwin/clang (Debug)	8m 29s
aarch64-apple-darwin/clang (Release)	13m 29s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 26s
x86_64-unknown-linux-gnu/gcc (Release)	17m 5s
x86_64-unknown-linux-gnu/clang (Debug)	7m 33s
x86_64-unknown-linux-gnu/clang (Release)	13m 40s
aarch64-unknown-linux-gnu/gcc (Debug)	59m 11s
aarch64-unknown-linux-gnu/gcc (Release)	48m 5s
aarch64-unknown-linux-gnu/clang (Debug)	54m 11s
aarch64-unknown-linux-gnu/clang (Release)	31m 11s
	6h 14m 48s

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