Remove hubble.js (#2383)

## Summary:
Perseus no longer uses hubble.js in our repo. As such I'm removing that package and remaining build configurations.

Issue: ----

## Test plan:
Run `pnpm install`, `pnpm build`, `pnpm lint`, and `pnpm test`. All things should pass and nothing should change in perseus implementation.

Author: catandthemachines

Reviewers: handeyeco, catandthemachines, jeremywiebe, benchristel

Required Reviewers:

Approved By: handeyeco, jeremywiebe

Checks: ✅ 8 checks were successful

Pull Request URL: #2383

Author: catandthemachines

.changeset/happy-radios-help.md

@@ -0,0 +1,7 @@
+---
+"perseus-build-settings": patch
+"@khanacademy/perseus": patch
+"@khanacademy/perseus-editor": patch
+---
+
+Removing dependency on hubble.js

config/build/rollup.config.js

@@ -142,7 +142,6 @@ const createConfig = (
                 // then they are marked as external and not bundled (by the
                 // autoExternal() plugin). For now, this works!
                 entries: {
-                    hubble: path.join(rootDir, "vendor", "hubble"),
                     jsdiff: path.join(rootDir, "vendor", "jsdiff"),
                     raphael: path.join(rootDir, "vendor", "raphael"),
                 },

knip.config.ts

@@ -22,7 +22,6 @@ const config: KnipConfig = {
         // symlinked type defs for third-party libs
         "**/aphrodite.d.ts",
         "**/assets.d.ts",
-        "**/hubble.d.ts",
         "**/jsdiff.d.ts",
         "**/raphael.d.ts",
         "**/utility.d.ts",

packages/perseus-editor/tsconfig-build.json

@@ -5,7 +5,6 @@
         "rootDir": "src",
         "paths": {
             "jsdiff": ["../../vendor/jsdiff/jsdiff.js"],
-            "hubble": ["../../vendor/hubble/hubble.js"],
             // NOTE(kevinb): We have to repeat this here because TS doesn't do
             // intelligent merge of tsconfig.json files when using `extends`.
             "@khanacademy/*": [

packages/perseus/tsconfig-build.json

@@ -4,7 +4,6 @@
         "outDir": "./dist",
         "rootDir": "src",
         "paths": {
-            "hubble": ["../../vendor/hubble/hubble.js"],
             "raphael": ["../../vendor/raphael/raphael.js"],
             // NOTE(kevinb): We have to repeat this here because TS doesn't do
             // intelligent merge of tsconfig.json files when using `extends`.

pnpm-lock.yaml

@@ -14,7 +14,6 @@
     "compilerOptions": {
         "noEmit": true,
         "paths": {
-            "hubble": ["./vendor/hubble/hubble.js"],
             "jsdiff": ["./vendor/jsdiff/jsdiff.js"],
             "raphael": ["./vendor/raphael/raphael.js"],
             "@khanacademy/kas": ["./packages/kas/src"],