Remove MultiRenderer

[handeyeco]

Summary:

GTP is dead and MultiRenderer existed for GTP. Removing it simplifies things quite a bit.

Issue: LEMS-2675

Test plan:

Shouldn't affect anything, no longer in use

[khan-actions-bot]

Gerald

Required Reviewers

• @Khan/perseus for changes to .changeset/cool-taxis-clap.md, docs/architecture.md, packages/perseus/src/a11y.ts, packages/perseus/src/index.ts, packages/perseus/src/perseus-types.ts, packages/perseus/src/renderability.ts, packages/perseus/src/types.ts, packages/perseus/src/widget-type-utils.ts, packages/perseus-editor/src/index.ts, packages/perseus/src/__tests__/a11y.test.ts, packages/perseus/src/__tests__/renderability.test.ts, packages/perseus-editor/src/components/graph-settings.tsx, packages/perseus-editor/src/widgets/interactive-graph-editor/components/interactive-graph-settings.tsx, packages/perseus/src/util/parse-perseus-json/regression-tests/__snapshots__/parse-perseus-json-snapshot.test.ts.snap

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[github-actions]

Size Change: -20.1 kB (-1.56%)

Total Size: 1.27 MB

Filename	Size	Change
packages/perseus-editor/dist/es/index.js	688 kB	-9.48 kB (-1.36%)
packages/perseus/dist/es/index.js	415 kB	-10.6 kB (-2.5%)

ℹ️ View Unchanged

Filename	Size
packages/kas/dist/es/index.js	39 kB
packages/keypad-context/dist/es/index.js	760 B
packages/kmath/dist/es/index.js	4.27 kB
packages/math-input/dist/es/index.js	77.9 kB
packages/math-input/dist/es/strings.js	1.79 kB
packages/perseus-core/dist/es/index.js	1.48 kB
packages/perseus-linter/dist/es/index.js	22.2 kB
packages/perseus/dist/es/strings.js	3.7 kB
packages/pure-markdown/dist/es/index.js	3.66 kB
packages/simple-markdown/dist/es/index.js	12.5 kB

_{compressed-size-action}

[jeremywiebe]

Exciting to drop support for these MultiItems.

Not sure if we want to, but I think we can delete the data/item-missing-answerArea.json parsing test file and its associated snapshot too then.

[jeremywiebe]

I don't see these used anywhere. Can we delete these too?

[github-actions]

npm Snapshot: Published

Good news!! We've packaged up the latest commit from this PR (f2225a0) and published it to npm. You
can install it using the tag PR1955.

Example:

yarn add @khanacademy/perseus@PR1955

If you are working in Khan Academy's webapp, you can run:

./dev/tools/bump_perseus_version.sh -t PR1955