Remove getGrammarTypeForPath

[handeyeco]

Summary:

Pretty sure based on the comments, searching for uses, and this message that this is just dead code.

[khan-actions-bot]

Gerald

Required Reviewers

• @Khan/perseus for changes to .changeset/tough-socks-fail.md, packages/perseus/src/renderer.tsx, packages/perseus/src/server-item-renderer.tsx, packages/perseus/src/types.ts, packages/perseus/src/__tests__/renderer.test.tsx, packages/perseus/src/__tests__/server-item-renderer.test.tsx, packages/perseus/src/widgets/expression/expression.tsx, packages/perseus/src/widgets/input-number/input-number.tsx, packages/perseus/src/widgets/matrix/matrix.tsx, packages/perseus/src/widgets/number-line/number-line.tsx, packages/perseus/src/widgets/numeric-input/numeric-input.tsx, packages/perseus/src/widgets/table/table.tsx

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[github-actions]

npm Snapshot: Published

Good news!! We've packaged up the latest commit from this PR (dc263a3) and published it to npm. You
can install it using the tag PR1740.

Example:

yarn add @khanacademy/perseus@PR1740

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

./dev/tools/bump_perseus_version.sh -t PR1740

[github-actions]

Size Change: -289 B (-0.03%)

Total Size: 865 kB

Filename	Size	Change
packages/perseus/dist/es/index.js	419 kB	-289 B (-0.07%)

ℹ️ View Unchanged

Filename	Size
packages/kas/dist/es/index.js	38.3 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	78 kB
packages/math-input/dist/es/strings.js	1.79 kB
packages/perseus-core/dist/es/index.js	1.48 kB
packages/perseus-editor/dist/es/index.js	280 kB
packages/perseus-linter/dist/es/index.js	22.2 kB
packages/perseus/dist/es/strings.js	3.4 kB
packages/pure-markdown/dist/es/index.js	3.66 kB
packages/simple-markdown/dist/es/index.js	12.4 kB

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[benchristel]

LGTM!