Debian did removed those files from the officiale upstream released tarball
since they are sourceless:

installer/nsis_plugins/inetc.dll
installer/nsis_plugins/FindProcDLL.dll
installer/7za.exe
installer/dos2unix.exe

Those 4 above are windows only so we are losing nothing; the two below are from a Java AI interface which is not yet shipped in the tarball (but available on the forums), so we are not losing much and anyway the gorgeous upstream is going to refactor the java AI code to comply with this issue.

AI/Interfaces/Java/data/jlib/vecmath.jar
AI/Interfaces/Java/data/jlib/jna.jar

