chore: remove old custom types

src/client/custom-slate-types.ts

@@ -1,27 +0,0 @@
-// This example is for an Editor with `ReactEditor` and `HistoryEditor`
-import { BaseEditor, BaseRange } from 'slate'
-import { HistoryEditor } from 'slate-history'
-
-export type CustomEditor = BaseEditor & HistoryEditor
-
-export type CustomElement = {
-  type?: string
-  children: CustomText[]
-}
-
-export type CustomRange = {
-  isCaret?: boolean
-} & BaseRange
-
-export type FormattedText = { text: string; bold?: boolean }
-
-export type CustomText = FormattedText
-
-declare module 'slate' {
-  interface CustomTypes {
-    Editor: CustomEditor
-    Element: CustomElement
-    Text: CustomText
-    Range: CustomRange
-  }
-}