get rid of CodePushUnknownException.cs

Author: Geoffrey Goh

windows/CodePushReactPackage.cs

@@ -139,8 +139,7 @@ internal async Task<long> GetBinaryResourcesModifiedTime()
             var fileProperties = await assetJSBundleFile.GetBasicPropertiesAsync();
             return fileProperties.DateModified.ToUnixTimeMilliseconds();
         }
-
-
+        
         internal void InitializeUpdateAfterRestart()
         {
             JObject pendingUpdate = SettingsManager.GetPendingUpdate();

windows/CodePushUnknownException.cs

@@ -235,14 +235,7 @@ private async Task<StorageFolder> GetCurrentPackageFolder()
         private async Task<JObject> GetCurrentPackageInfo()
         {
             StorageFile statusFile = await GetStatusFile();
-            try
-            {
-                return await CodePushUtils.GetJObjectFromFile(statusFile);
-            }
-            catch (Exception e)
-            {
-                throw new CodePushUnknownException("Error getting current package info", e);
-            }
+            return await CodePushUtils.GetJObjectFromFile(statusFile);
         }
 
         private async Task<StorageFile> GetDownloadFile()
@@ -270,14 +263,7 @@ private string ShortenPackageHash(string longPackageHash)
 
         private async Task UpdateCurrentPackageInfo(JObject packageInfo)
         {
-            try
-            {
-                await FileIO.WriteTextAsync(await GetStatusFile(), JsonConvert.SerializeObject(packageInfo));
-            }
-            catch (IOException e)
-            {
-                throw new CodePushUnknownException("Error updating current package info", e);
-            }
+            await FileIO.WriteTextAsync(await GetStatusFile(), JsonConvert.SerializeObject(packageInfo));
         }
     }
 }