doc: remove possibly confusing comment

There are valid reasons to use the other keymap-creation functions, if
one needs them. On the other hand, if one is supposed to use RMLVO, it
is more or less the only choice, so the comment is not needed in this
case as well.

Signed-off-by: Ran Benita <ran234@gmail.com>

xkbcommon/xkbcommon.h

@@ -690,9 +690,6 @@ enum xkb_keymap_compile_flags {
  * The primary keymap entry point: creates a new XKB keymap from a set of
  * RMLVO (Rules + Model + Layouts + Variants + Options) names.
  *
- * You should almost certainly be using this and nothing else to create
- * keymaps.
- *
  * @param context The context in which to create the keymap.
  * @param names   The RMLVO names to use.  In xkbcommon versions prior
  *                to 0.2.1, this field must be non-NULL.  In later