Removed duplicated CHAP frame testing funtion.
Removed duplicated CHAP frame testing funtion.

davispuh/taglib,TsudaKageyu/taglib,taglib/taglib,Distrotech/taglib,TsudaKageyu/taglib,black78/taglib,videolabs/taglib,pbhd/taglib,davispuh/taglib,i80and/taglib,dlz1123/taglib,TsudaKageyu/taglib,i80and/taglib,taglib/taglib,videolabs/taglib,dlz1123/taglib,MaxLeb/taglib,black78/taglib,i80and/taglib,MaxLeb/taglib,davispuh/taglib,black78/taglib,Distrotech/taglib,Distrotech/taglib,taglib/taglib,pbhd/taglib,videolabs/taglib,dlz1123/taglib,pbhd/taglib,MaxLeb/taglib