Update page 'Future AerScript Versions'

Future-AerScript-Versions.md

@@ -30,11 +30,3 @@ A right associative \** operator can be added to support exponentiation, along w
 
     printf("2 ** 3 = %d\n", 2 ** 3); // 8
     printf("2 ** 3 ** 2 = %d\n", 2 ** 3 ** 2); // 512
-
-### Null Coalescing Operator
-The ??-operator could return the left side as long as it's not null, in that case the right side would be returned
-
-    int $var1 = getValue();
-    int $var2 = 7;
-
-    int $result = $var1 ?? $var2;  // $result will be 7 if $var1 is NULL