lpbin: Remove a response about QUERY_BUFFERING
lpbin: Remove a response about QUERY_BUFFERING

QUERY_BUFFERING is a reserved feature for queue-like
elements. If this feature is overrided, it can cause
strange state for stream.

Change-Id: I08b7c9c6a3dbff5efeac4da6bcd6518a44bccdc9
Reviewed-on: https://gpro.palm.com/21439
Tested-by: Jeongseok Kim <0c03ab7a1b32f29697716389c3f9549845834271@lge.com>
Reviewed-by: Wonchul Lee <9841bdbec9dbb2acc2dcaaa1dab0491399f0e464@lge.com>
Reviewed-by: HoonHee Lee <41497318ef67053f37c2ac0e974a3369f66d66ec@lge.com>
Reviewed-by: Jeongseok Kim <0c03ab7a1b32f29697716389c3f9549845834271@lge.com>

justinjoy/gst-plugins-lp,justinjoy/gst-plugins-lp