Expenses chart component

Under the 'scales' > x or y > grid. you need to add "drawTicks" and set it to false

just under your 'drawOnChartArea'

            scales: {
                x:{
                    grid: {
                    drawOnChartArea: false,
                    drawTicks:false,
                    },

               },
               y: {
                grid: {
                    drawOnChartArea: false,
                    drawTicks:false,
                },
                ticks:{
                    display: false
                }
               }
            }