agnosticbin: Remove not needed mutex
agnosticbin: Remove not needed mutex

Change-Id: I79dc4816e56add5c246c582676dda4e09b0ba191

shelsonjava/kms-elements,TribeMedia/kms-elements,Kurento/kms-elements,Kurento/kms-elements,shelsonjava/kms-elements,TribeMedia/kms-elements,Kurento/kms-elements,TribeMedia/kms-elements,shelsonjava/kms-elements