Remove function bodies of some non-specialized template functions.
Remove function bodies of some non-specialized template functions.

The code won't link when a wrong version is used. It's better than showing a debug message.

black78/taglib,TsudaKageyu/taglib,taglib/taglib,black78/taglib,taglib/taglib,taglib/taglib,TsudaKageyu/taglib,TsudaKageyu/taglib,black78/taglib