Fix copyright for kdtree files

Closes: #983306

debian/copyright

@@ -69,9 +69,7 @@ Comment: util/bt.c was adapted from GNU libavl. The changes are under
 
 Files: doc/UCAC3_guide/build-index.py doc/UCAC3_guide/get_ucac3.py
  doc/UCAC4_guide/build-index.py doc/UCAC4_guide/get_ucac4.py
- catalogs/ucac4-fits.h libkd/an-fls.h
 Copyright: 2014 Denis Vida,
- 1992 Linus Torvalds,
  2011 Dustin Lang,
  2014 Michal Kočer
 License: GPL-2
@@ -87,7 +85,7 @@ License: GPL-2
  On Debian systems, the full text of the GNU General Public
  License version 2 can be found in the file
  `/usr/share/common-licenses/GPL-2'.
-Comment: The Python files are not used to build the package.
+Comment: The files are not used to build the package.
 
 Files: blind/an_mm_malloc.h blind/anet.py util/ctmf.c
 Copyright: 2004 Free Software Foundation, Inc.