Follow these steps to delete contact records in mass:
Step 1: Log in to your CRM account
Step 2: Click on Deals on the Top Menu Bar
Step 3: Select the record/s that you want to delete by clicking on the checkbox next to them, click on Actions on the top and choose Delete Selected
Step 4: A dialogue box will appear in front of you for confirmation, click on Delete to delete the chosen records
These records move to the recycle bin that can be restored if required later