removing redundant code and cleaning up unnecessary messages.

Author: yasirfolio3

ios/Classes/HelperClasses/Constants.swift

@@ -96,20 +96,6 @@ struct ErrorMessage {
  static let userContextNotFound = "User context not found."
 }
 
-struct SuccessMessage {
- static let instanceCreated = "Optimizely instance created successfully."
- static let optimizelyConfigFound = "Optimizely config found."
- static let optimizelyClientClosed = "Optimizely client closed successfully."
- static let userContextCreated = "User context created successfully."
- static let attributesAdded = "Attributes added successfully."
- static let listenerAdded = "Listener added successfully."
- static let listenerRemoved = "Listener removed successfully."
- static let decideCalled = "Decide called successfully."
- static let forcedDecisionSet = "Forced decision set successfully."
- static let forcedDecisionRemoved = "Forced decision removed successfully."
- static let allForcedDecisionsRemoved = "All Forced decisions removed successfully."
-}
-
 //Sohail: There is one issue, can we make sure the types remain same, probably we will need to write unit test separately for type.
 struct TypeValue {
  static let string = "string"