Given that you know the index of the item you want to remove from the array, it would be much more efficient to use splice instead of grep to remove the item from the array.
#replace
my @newarray = grep {$_ !=$element} @array; #remove the element
#with
splice @array, $index, 1; #remove item from array;
# and remove this. No need as the array has been modified.
# @array = @newarray; #reset the array
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