[Solved]-Show only time labels on xAxis. Highcharts-Highcharts

In xAxis of your chart you need to provide tickinterval and dateTimeLabelFormats. Following code gives the tick interval of 1.5 hours. You can change that to any number of hours you want by replacing 1.5 in tickInterval: 1.5 * 3600 * 1000,

xAxis: {
    type: 'datetime',
    //Sets tickInterval to 24 * 3600 * 1000 if display is by day
    tickInterval: 1.5 * 3600 * 1000,
    dateTimeLabelFormats : {
        day: '%H:%M'
    }
}