Destroying a square of sprites at specific coordinates

Hello, I am working a medium 2d mining game and I have a script that makes a custom-sized square world, but I would like to clear a square in the middle and clear spaces for random ores with only the coordinates and thae name of the object. I now that there is a way to delete a GameObject at a specific location but it is far too big to be used when deleting multiple objects. Here is my function for creating the square world:

 function MakeRock() {
         Instantiate(Rock, Vector2(0, 0), Quaternion.identity);
         Instantiate(Ground, Vector3(0, 0, 0.1), Quaternion.identity);
             
     while (-FillUp * 2 <= Size) {
         while (up < Size) {
             Instantiate(Rock, Vector2(FillUp, CountUp), Quaternion.identity);
             Instantiate(Ground, Vector3(FillUp, CountUp, 0.1), Quaternion.identity);
             CountUp = CountUp + 0.5;
             up++;
         }
         FillUp = FillUp - 0.5;
         up = 0;
         CountUp = 0.5;
     }
     
     while (FillDown * 2 <= Size) {
         while (down < Size) {
             Instantiate(Rock, Vector2(FillDown, CountDown), Quaternion.identity);
             Instantiate(Ground, Vector3(FillDown, CountDown, 0.1), Quaternion.identity);    
             CountDown = CountDown - 0.5;
             down++;
         }
         FillDown = FillDown + 0.5;
         down = 0;
         CountDown = -0.5;
     }
     
     while (FillRight * 2 <= Size) {
         while (Right < Size) {
             Instantiate(Rock, Vector2(CountRight, FillRight), Quaternion.identity);
             Instantiate(Ground, Vector3(CountRight, FillRight, 0.1), Quaternion.identity);
             CountRight = CountRight + 0.5;
             Right++;
         }
         FillRight = FillRight + 0.5;
         Right = 0;
         CountRight = 0.5;
     }
     
     while (-FillLeft * 2 <= Size) {
         while (Left < Size) {
             Instantiate(Rock, Vector2(CountLeft, FillLeft), Quaternion.identity);
             Instantiate(Ground, Vector3(CountLeft, FillLeft, 0.1), Quaternion.identity);
             CountLeft = CountLeft - 0.5;
             Left++;
 
         }
         FillLeft = FillLeft - 0.5;
         Left = 0;
         CountLeft = -0.5;
     }
 }
 

Thank you, Qo2770