DeleteCell:

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   Delete a cell element of a one dimensional cell array.
   If k is a logical array, the cells that will be deleted are the ones
   with true values, i.e. c = c(~k)
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   Form:
   c = DeleteCell( c, k )
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   ------
   Inputs
   ------
   c        {}  Cell array
   k        (:) Array of elements, or logical array

   -------
   Outputs
   -------
   c        {}  Cell array

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