How do I remove the bullets from the list items?

[Vijayeta Meher]

Suppose I have 9 list items

<li>A</li>

<li>B</li>

<li>C</li>

<li>D</li>

<li>E</li>

<li>F</li>

<li>G</li>

<li>H</li>

<li>I<li>

I need to remove the bullets from list item 1 ,2 and 9.

How do I remove it?

My current Approach

.listitem(1);

 .listitem(3);

.listitem(@i){

       &:nth-child(@{i}){

         list-style-type: none;

       }

       &:last-of-type{

         list-style-type: none;

       }

     }

This is not working for me.

Can someone suggest any other approach?