Remove functions-related buildpacks #2132

Job	Run time
Generate test coverage report	1m 12s
rust-unit-test	54s
rust-lint	22s
shell-lint	12s
Find libcnb buildpacks	6s
engine (22, amd64)	2m 39s
corepack (24, arm64)	3m 32s
corepack (24, amd64)	2m 38s
corepack (22, amd64)	2m 26s
engine (24, amd64)	2m 37s
npm-install (24, arm64)	4m 38s
npm-install (24, amd64)	3m 15s
engine (24, arm64)	4m 31s
npm-engine (24, arm64)	4m 58s
pnpm-install (24, arm64)	4m 18s
yarn (22, amd64)	3m 34s
pnpm-install (24, amd64)	2m 54s
pnpm-engine (24, amd64)	1m 40s
npm-engine (22, amd64)	2m 45s
yarn (24, arm64)	5m 7s
npm-engine (24, amd64)	2m 53s
pnpm-engine (24, arm64)	2m 52s
pnpm-engine (22, amd64)	3m 11s
yarn (24, amd64)	3m 25s
npm-install (22, amd64)	3m 14s
pnpm-install (22, amd64)	3m 1s
	1h 12m 54s

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