Remove unused error codes
-rw-r--r-- 226 AUTHORS
-rw-r--r-- 35147 COPYING
-rw-r--r-- 15749 INSTALL
-rw-r--r-- 7495 Makefile.am
-rw-r--r-- 25215 NEWS
-rw-r--r-- 20054 README
-rw-r--r-- 3546 README.WINDOWS
drwxr-xr-x - archlinux
-rwxr-xr-x 54 bootstrap
drwxr-xr-x - build-aux
-rw-r--r-- 269 clang-scan-build.sh
-rw-r--r-- 12883 configure.ac
-rw-r--r-- 41 configure.windows
drwxr-xr-x - debian
drwxr-xr-x - doc
drwxr-xr-x - examples
drwxr-xr-x - include
drwxr-xr-x - m4
-rwxr-xr-x 221 make-releases
-rwxr-xr-x 1533 make-windows-release
drwxr-xr-x - programs
drwxr-xr-x - rpm
drwxr-xr-x - src
drwxr-xr-x - tests
-rwxr-xr-x 1105 update-version
-rw-r--r-- 382 wimlib.pc.in