modules: Remove #ifdef CONFIG_STRICT_MODULE_RWX around rodata_enabled

Now that rodata_enabled is declared at all time, the #ifdef
CONFIG_STRICT_MODULE_RWX can be removed.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>