bugfix(user): eliminado findByUsername en el controlador

src/main/java/com/example/apprecetas/user/infrastructure/controller/ReadUserController.java

@@ -27,11 +27,6 @@ public class ReadUserController {
         return ResponseEntity.ok().body(mapper.map(service.readById(id)));
     }
 
-    @GetMapping("/{username}")
-    public ResponseEntity<UserOutputDto> readByUsername(@PathVariable String username) {
-        return ResponseEntity.ok().body(mapper.map(service.readByUsername(username)));
-    }
-
     @GetMapping
     public ResponseEntity<List<UserOutputDto>> readAll() {
         if (service.readAll().isEmpty())