chore: remove deprecated backup typings

Author: joaotonaco

.changeset/hungry-toys-check.md

@@ -0,0 +1,5 @@
+---
+"@squarecloud/api-types": minor
+---
+
+Remove deprecated backup typings

payloads/v2/backups.ts

@@ -1,5 +1,4 @@
 export * from "./application";
-export * from "./backups";
 export * from "./deploy";
 export * from "./files";
 export * from "./logs";

payloads/v2/index.ts

@@ -1,5 +1,4 @@
 export * from "./application";
-export * from "./backups";
 export * from "./deploy";
 export * from "./files";
 export * from "./network";