MPAndroidChart hide background grid
Use this:
mChart.getAxisLeft().setDrawGridLines(false);
mChart.getXAxis().setDrawGridLines(false);
Please note you may need right axis or both of them. It depends on axis you are actually using.
UPDATE:
Is it axis line? If it is, then simply chart.getXAxis().setEnabled(false)
Also possible: chart.getAxisLeft().setDrawAxisLine(false)
Simply below three lines remove horizontal and vertical lines in the bar chart.
barChart.getAxisRight().setDrawGridLines(false);
barChart.getAxisLeft().setDrawGridLines(false);
barChart.getXAxis().setDrawGridLines(false);