How to remove items from list of dictionary?

List of Dictionary - 3 items
Dictionary
  icon:"arrow-circle-o-left"(Text)
  action:26(Number (Integer))
Dictionary
  icon:"sitemap"(Text)
  action:25(Number (Integer))
Dictionary
  icon:"check-circle-o"(Text)
  action:28(Number (Integer))

As i want to remove second item from dictionary what should i do 

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