Enable Theora module for HTML5 platform

platform/javascript/detect.py

@@ -25,7 +25,6 @@ def get_opts():
 def get_flags():
     return [
         ('tools', False),
-        ('module_theora_enabled', False),
         # Disabling the mbedtls module reduces file size.
         # The module has little use due to the limited networking functionality
         # in this platform. For the available networking methods, the browser