Revert "remove premium checks for internal testing"

This reverts commit 26fb6fc3b7.

src/Core/Services/Implementations/SendService.cs

@@ -80,7 +80,6 @@ namespace Bit.Core.Services
                 throw new BadRequestException("No file data.");
             }
 
-            /*
             var storageBytesRemaining = 0L;
             if (send.UserId.HasValue)
             {
@@ -117,7 +116,6 @@ namespace Bit.Core.Services
             {
                 throw new BadRequestException("Not enough storage available.");
             }
-            */
 
             var fileId = Utilities.CoreHelpers.SecureRandomString(32, upper: false, special: false);
             await _sendFileStorageService.UploadNewFileAsync(stream, send, fileId);