chore: remove duplicate message template type definition

Author: Elena Hristova

src/share-manager.d.ts

@@ -7,16 +7,6 @@ import {
 
 export * from './share-manager.common';
 
-export declare enum MessageGenericTemplateImageAspectRatio {
-    Horizontal = 0,
-    Square = 1
-}
-
-export declare enum MessageMediaTemplateMediaType {
-    Image = 0,
-    Video = 1
-}
-
 /**
  * When people share links from your app to Facebook it includes a contentURL with the link to be shared.
  * @param {string} link  Link to be shared.