fix(storybook): remove projectBuildConfig from everywhere

[mandarini]

Current Behavior

The projectBuildConfig flag, meant for Nx versions <14.1.8, is no longer used anywhere. It still exists, however, in the executor/generator schemas. It is safe to remove it.

Expected Behavior

The unused projectBuildConfig flag is now removed from the schemas

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✅ Successfully ran 12 targets

• nx affected --target=build --base=56dbb0d602df65d0f708e0bcf53ff82b16833213 --head=85c27223a29a9413261ea42fdc063f5e8a776b69 --parallel=3
• nx affected --target=e2e --base=56dbb0d602df65d0f708e0bcf53ff82b16833213 --head=85c27223a29a9413261ea42fdc063f5e8a776b69 --exclude=e2e-detox,e2e-js,e2e-next,e2e-workspace-create,e2e-workspace-integrations,e2e-workspace-core,e2e-react,e2e-web,e2e-angular-extensions,e2e-angular-core,e2e-cli,e2e-nx-plugin,e2e-cypress,e2e-node,e2e-linter,e2e-jest,e2e-a...
• nx affected --target=e2e --base=56dbb0d602df65d0f708e0bcf53ff82b16833213 --head=85c27223a29a9413261ea42fdc063f5e8a776b69 --exclude=e2e-storybook,e2e-react-native,e2e-detox --parallel=1
• nx affected --target=lint --base=56dbb0d602df65d0f708e0bcf53ff82b16833213 --head=85c27223a29a9413261ea42fdc063f5e8a776b69 --parallel=3
• nx affected --target=test --base=56dbb0d602df65d0f708e0bcf53ff82b16833213 --head=85c27223a29a9413261ea42fdc063f5e8a776b69 --parallel=1
• nx build typedoc-theme
• nx-cloud record -- yarn check-commit
• nx-cloud record -- yarn check-imports
• nx-cloud record -- yarn depcheck
• nx-cloud record -- yarn documentation
• nx-cloud record -- yarn nx format:check --base=56dbb0d602df65d0f708e0bcf53ff82b16833213 --head=85c27223a29a9413261ea42fdc063f5e8a776b69
• nx-cloud record -- yarn nx workspace-lint

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Name	Status	Preview	Updated
nx-dev	✅ Ready (Inspect)	Visit Preview	Jun 9, 2022 at 2:51PM (UTC)

[github-actions]

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