Remove unused package

Author: gregberge

bun.lock

@@ -198,7 +198,6 @@
       "dependencies": {
         "@gitbook/api": "0.96.1",
         "@gitbook/icons": "workspace:*",
-        "assert-never": "^1.2.1",
         "classnames": "^2.5.1",
       },
       "devDependencies": {

packages/react-contentkit/package.json

@@ -11,7 +11,6 @@
     "dependencies": {
         "classnames": "^2.5.1",
         "@gitbook/api": "0.96.1",
-        "assert-never": "^1.2.1",
         "@gitbook/icons": "workspace:*"
     },
     "peerDependencies": {