doc: remove Corepack documentation page #250

Job	Run time
Build slim tarball	1m 38s
x86_64-linux: with shared libraries	28m 58s
aarch64-darwin: with shared libraries	22m 48s
x86_64-darwin: with shared libraries	45m 23s
aarch64-linux: with shared libraries	25m 4s
	2h 3m 51s

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