How to delete unnecessary files from project directory?

["KOMTEK" <comtek@solaris.ru>]

Hi,

In the directory where I'm bulding my application there are a lot of .cpp 
.h and .hpp files. Some of them used to belong to my project earlier, but
do not belong to it now. Others still belong to my project. 
I'm going to delete unneccessary files form this project directory. With
.cpp files it's rather easy: I just can check them against the file names
in my .bpr file. But with .hpp (.h) files it's more difficult: I have to
manulally trace all the dependencies (#includes).
Is there any utility that can help me to automate this task?