build: osmo-nitb does not use dlopen/dlsym remove LIBRARY_DL

osmo-nitb does not use dlopen/dlsym so we can remove the depedency
to LIBRARY_DL.
1 file changed
tree: 74f47d65d0ed47b45b83e75b70ca1acf7bf5d27c
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. README