Remove the unused dependencies from IndicatorController.

src/main/java/space/kklochko/spring_rest_example/controllers/IndicatorController.java

@@ -1,6 +1,5 @@
 package space.kklochko.spring_rest_example.controllers;
 
-import jakarta.persistence.Entity;
 import jakarta.persistence.EntityManager;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
@@ -9,8 +8,6 @@ import org.springframework.web.bind.annotation.*;
 import space.kklochko.spring_rest_example.db.repositories.IndicatorRepository;
 import space.kklochko.spring_rest_example.models.Indicator;
 
-import java.sql.Timestamp;
-import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;