Remove `libdwarf` headers from logduration install

[coleramos425]

I encountered some issues resolving the path to libdwarf headers when using the installed version of logduration, building worked fine. Put this off and copied headers to install, but we should come back and fix this as it's a sloppy fix

[rwvo]

@copilot Check the CMake and build files to see if there's any copying of libdwarf headers going on.