chore: dedupe JSDoc string for deprecated class FileRoute (#5916)

Author: onstash

packages/react-router/src/fileRoute.ts

@@ -89,14 +89,6 @@ export function createFileRoute<
   @deprecated It's no longer recommended to use the `FileRoute` class directly.
   Instead, use `createFileRoute('/path/to/file')(options)` to create a file route.
 */
-/** 
-  @deprecated It's no longer recommended to use the `FileRoute` class directly.
-  Instead, use `createFileRoute('/path/to/file')(options)` to create a file route.
-*/
-/**
-  @deprecated It's no longer recommended to use the `FileRoute` class directly.
-  Instead, use `createFileRoute('/path')(options)` to create a file route.
-*/
 export class FileRoute<
   TFilePath extends keyof FileRoutesByPath,
   TParentRoute extends AnyRoute = FileRoutesByPath[TFilePath]['parentRoute'],