gdb : moved unused files to obsolete dir

Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>

diff --git a/recipes/gdb/files/libiberty-cross.patch b/recipes/obsolete/gdb/files/libiberty-cross.patch
similarity index 100%
rename from recipes/gdb/files/libiberty-cross.patch
rename to recipes/obsolete/gdb/files/libiberty-cross.patch

diff --git a/recipes/gdb/gdb-6.3/thumb-breakpoint.patch b/recipes/obsolete/gdb/gdb-6.3/thumb-breakpoint.patch
similarity index 100%
rename from recipes/gdb/gdb-6.3/thumb-breakpoint.patch
rename to recipes/obsolete/gdb/gdb-6.3/thumb-breakpoint.patch