Implement pad_remove function
Implement pad_remove function

Change-Id: I39ff970f0a59756e3f2dc2efc7aba522694649bc

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