mysql : moved unused files to obsolete dir

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

diff --git a/recipes/mysql/files/gen_lex_hash.patch b/recipes/obsolete/mysql/files/gen_lex_hash.patch
similarity index 100%
rename from recipes/mysql/files/gen_lex_hash.patch
rename to recipes/obsolete/mysql/files/gen_lex_hash.patch

diff --git a/recipes/mysql/mysql-5.1.40-have_atomic_pthread_t.patch b/recipes/obsolete/mysql/mysql-5.1.40-have_atomic_pthread_t.patch
similarity index 100%
rename from recipes/mysql/mysql-5.1.40-have_atomic_pthread_t.patch
rename to recipes/obsolete/mysql/mysql-5.1.40-have_atomic_pthread_t.patch