Minecraft – How to /clear a specific spawn egg in from the inventory

First you need to close the display:{} tag then remove the extra comma. So it should look like this:

/clear @p gold_ingot 1 0 {display:{Name:"Stamped Gold Bar",Lore:["One Gold Bar","Stamped on site at Acacia Mint"]},ench:[{id:34,lvl:1}]}}

This will most likely work, I'm not sure though.

There is no way to remove items if they are moved with the cursor, as far as I am aware, due to the fact that it doesn't have a slot id.

However clearing all other slots of a specific item and killing all dropped items is possible, using /replaceitem. This would require 36 command blocks to clear items from every slot in the inventory apart from armor, 37 if you include offhand.

Inventory

/replaceitem entity @a slot.inventory.# minecraft:air

Replace # with a number from 0 to 26, with 0 being top-left slot and 26 being bottom right slot of the inventory. This does not include the hotbar

Hotbar

/replaceitem entity @a slot.hotbar.# minecraft:air

Replace # with a number from 0 to 8, 0 being far left hotbar slot, 8 being far right. This does not include offhand

Offhand

/replaceitem entity @a slot.weapon.offhand minecraft:air

To clear the entire inventory, use /clear <player>

I know its a late answer, but this will work. It may cause a bit of lag. You will not be able to use any other items, unless you find a way of specifying what item to replace. I have tested /clear for its maxCount parameter, but it specifies the maximum amount to be cleared, not the maximum items left.

Good luck!