bootstrap-pkgs-git.txt: Remove gdb.

ProteanOS's GDB doesn't yet work:

    / # gdb /bin/busybox
    GNU gdb (GDB) 7.6.1
    Copyright (C) 2013 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
    and "show warranty" for details.
    This GDB was configured as "x86_64-unknown-linux-gnu".
    For bug reporting instructions, please see:
    <http://www.gnu.org/software/gdb/bugs/>...
    Reading symbols from /bin/busybox...(no debugging symbols found)...done.
    (gdb) run
    Starting program: /bin/busybox
    Cannot exec /bin/busybox -c exec /bin/busybox .
    Error: No such file or directory
    During startup program exited with code 127.

GDB may or may not make it into ProteanOS 1.0.  We'll debug this later.

0 files changed, 0 insertions, 0 deletions