Bulk object field Creator is most liked salesforce app which is called as a major time saver by many of its users. It helps to perform BULK CRUD operations from which one is Mass Delete Multiple Fields operation. There are some steps in deletion of multiple fields such as
Step 1 - Select Object which need to delete
Step 2 - Select Rows
Step 3 - Click the Delete Custom Field Button

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Haryana, Computer, Perform Salesforce Mass Object Deletion