How to hide the default row number from lightning datatable salesforce

In this post I will explain how to remove default row number from lightning datatable in LWC and aura.

Method 1 : 

Remove show-row-number-column attribute from the lightning datatable.

Method 2:

1.) Create csv file removeRow.css and paste the following code.

removeRow.css:

.slds-table tr th:first-child{

    width:0 !important;

}

2.) Create new static resource with the following details:

• Name               : removeRow
• File                  : Upload the removeRow.css file created in step 1.
• Cache Control : Public

3.) Refer the following code:

data_table.cmp:

<template>

    <div>

        <lightning-datatable

                key-field="id"

                data={caseData}

                columns={caseColumns}>

        </lightning-datatable>

    </div>    

</template>

data_table.js:

import { LightningElement,track,wire } from 'lwc';

import loadCases from '@salesforce/apex/data_table.loadCases';

import {loadStyle} from 'lightning/platformResourceLoader'

import REMOVEROW from '@salesforce/resourceUrl/removeRow'

export default class data_table extends LightningElement {

    @track caseData;

    @track caseColumns = [

    { label: 'Case Number', fieldName: 'CaseNumber', type: 'text'},

    { label: 'Subject', fieldName: 'Subject', type: 'text'},

    { label: 'Priority', fieldName: 'Priority', type: 'text'},

    ];

    @wire(loadCases)

    getCaseRecord(result){

        if (result.data) {

            this.caseData = result.data;

        }

    }

    renderedCallback(){ 

        Promise.all([

            loadStyle( this, REMOVEROW)

            ]).then(() => {

                console.log( 'Files loaded' );

            })

            .catch(error => {

                console.log( 'error',error );

        });

    }

}

data_table.apx:

public with sharing class data_table {

    @AuraEnabled(cacheable=true)

    Public static list<case> loadCases(){

        list<case> c = new list<case>();

        c = [Select id,CaseNumber,Subject, priority from Case];

        return c;

    }

}

Thanks,
Lovesalesforceyes