remove copyright from debian dir #493

Job	Run time
macosx	3m 33s
android	4m 56s
linux - debian:bookworm \|	2m 18s
ios	1m 58s
linux - debian:bookworm \| arm32	14m 51s
msvs	4m 23s
linux - debian:bookworm \| arm64	4m 8s
msys2 \| mingw32	2m 17s
linux - ubuntu:jammy \|	2m 38s
sanitizer - debian:bookworm	2m 19s
msys2 \| mingw64	2m 22s
linux - igagis/raspbian:bookworm \| arm32	12m 50s
sanitizer - arm32v7/debian:bookworm	14m 25s
sanitizer - arm64v8/debian:bookworm	3m 53s
	1h 16m 51s

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