agnosticbin: Change state elements state before removing it
agnosticbin: Change state elements state before removing it

Change-Id: I241067e5aac30acc66ff4f5ae8c94a9107b6d9f9

Kurento/kms-core,ESTOS/kms-core,TribeMedia/kms-core,KurentoLegacy/gst-kurento-plugins,TribeMedia/kms-core,KurentoLegacy/gst-kurento-plugins,KurentoLegacy/gst-kurento-plugins,Kurento/kms-core,shelsonjava/kms-core,Kurento/kms-core,ESTOS/kms-core,TribeMedia/kms-core,Kurento/kms-core,shelsonjava/kms-core,ESTOS/kms-core,ESTOS/kms-core,shelsonjava/kms-core,shelsonjava/kms-core,KurentoLegacy/gst-kurento-plugins,TribeMedia/kms-core