bufferpool config: function to remove an option in the config
Submitted by Matthew Waters
The use case I have for this is if an element wants to override/perform the creation of a meta on the buffer.
A simple solution of using gst_buffer_foreach_meta(); gst_buffer_remove_meta() will fail to remove any locked buffers that a bufferpool adds to the buffer. This makes it optional and possible for the meta to not appear on the buffer in the first place.