refactor: remove unused function

packages/server/src/model/doc.ts

@@ -12,29 +12,6 @@ export type {
 	DBDocument
 };
 
-export const MetaContentBody = {
-	title: "string",
-	content_type: "string",
-	basepath: "string",
-	filename: "string",
-	content_hash: "string",
-	additional: "object",
-	tags: "string[]",
-};
-
-export const isDocBody = (c: unknown): c is DocumentBody => {
-	return check_type<DocumentBody>(c, MetaContentBody);
-};
-
-export const isDoc = (c: unknown): c is Document => {
-	if (typeof c !== "object" || c === null) return false;
-	if ("id" in c && typeof c.id === "number") {
-		const { id, ...rest } = c;
-		return isDocBody(rest);
-	}
-	return false;
-};
-
 export interface DocumentAccessor {
 	/**
 	 * rescan document