[v2] breaking: remove derive-valtio dependency

package.json

@@ -104,8 +104,7 @@
   },
   "homepage": "https://github.com/pmndrs/valtio",
   "dependencies": {
-    "proxy-compare": "2.5.1",
-    "derive-valtio": "0.1.0"
+    "proxy-compare": "2.5.1"
   },
   "devDependencies": {
     "@babel/core": "^7.23.2",

src/vanilla/utils.ts

@@ -1,7 +1,6 @@
 export { subscribeKey } from './utils/subscribeKey.ts'
 export { watch } from './utils/watch.ts'
 export { devtools } from './utils/devtools.ts'
-export { derive, underive, unstable_deriveSubscriptions } from 'derive-valtio'
 export { deepClone } from './utils/deepClone.ts'
 export { proxyWithHistory } from './utils/proxyWithHistory.ts'
 export { proxySet } from './utils/proxySet.ts'