Action name: OpHexThis command converts immediate operand(s) type of the current instruction/data to hex number. So you can delete suspicious mark of the item.
When you use this command, IDA deletes the manually entered operand.
If the cursor is on the first operand (the cursor is before ',') then the first operand will be affected; otherwise, all other operands will be affected.
See also Edit|Operand types|Number submenu.