Data update

Task/Substring/Elixir/substring.elixir

@@ -1,12 +0,0 @@
-s = "abcdefgh"
-String.slice(s, 2, 3)           #=> "cde"
-String.slice(s, 1..3)           #=> "bcd"
-String.slice(s, -3, 2)          #=> "fg"
-String.slice(s, 3..-1)          #=> "defgh"
-
-# UTF-8
-s = "αβγδεζηθ"
-String.slice(s, 2, 3)           #=> "γδε"
-String.slice(s, 1..3)           #=> "βγδ"
-String.slice(s, -3, 2)          #=> "ζη"
-String.slice(s, 3..-1)          #=> "δεζηθ"