Respond to CR.

// FREEBIE

Signal/src/util/DisplayableText.swift

@@ -228,56 +228,6 @@ extension String {
                     && !$0.isZeroWidthJoiner
             })
     }
-
-    // The next tricks are mostly to demonstrate how tricky it can be to determine emoji's
-    // If anyone has suggestions how to improve this, please let me know
-    var emojiString: String {
-
-        return emojiScalars.map { String($0) }.reduce("", +)
-    }
-
-    var emojis: [String] {
-
-        var scalars: [[UnicodeScalar]] = []
-        var currentScalarSet: [UnicodeScalar] = []
-        var previousScalar: UnicodeScalar?
-
-        for scalar in emojiScalars {
-
-            if let prev = previousScalar, !prev.isZeroWidthJoiner && !scalar.isZeroWidthJoiner {
-
-                scalars.append(currentScalarSet)
-                currentScalarSet = []
-            }
-            currentScalarSet.append(scalar)
-
-            previousScalar = scalar
-        }
-
-        scalars.append(currentScalarSet)
-
-        return scalars.map { $0.map { String($0) } .reduce("", +) }
-    }
-
-    fileprivate var emojiScalars: [UnicodeScalar] {
-
-        var chars: [UnicodeScalar] = []
-        var previous: UnicodeScalar?
-        for cur in unicodeScalars {
-
-            if let previous = previous, previous.isZeroWidthJoiner && cur.isEmoji {
-                chars.append(previous)
-                chars.append(cur)
-
-            } else if cur.isEmoji {
-                chars.append(cur)
-            }
-
-            previous = cur
-        }
-
-        return chars
-    }
 }
 
 @objc class DisplayableText: NSObject {