Analysis: Resolve unnecessary safe call test type warning

Warning Message: "Unnecessary safe call on a non-null receiver of type
Xyz. This expression will have nullable type in future releases"

Author: ParaskP7

WordPress/src/test/java/org/wordpress/android/ui/prefs/notifications/FollowedBlogsProviderTest.kt

@@ -231,9 +231,7 @@ class FollowedBlogsProviderTest {
         subscriptionModel.emailPostsFrequency = emailFrequency
         subscriptionModel.shouldEmailComments = shouldEmailComments
         subscriptionModel.url = subscriptionUrl
-        feedId?.let {
-            subscriptionModel.feedId = it
-        }
+        subscriptionModel.feedId = feedId
         whenever(urlUtils.getHost(subscriptionUrl)).thenReturn(subscriptionUrlHost)
         return subscriptionModel
     }