[config] Add HB_NO_LAYOUT_FEATURE_PARAMS

Part of https://github.com/harfbuzz/harfbuzz/issues/1652
diff --git a/src/hb-ot-layout.cc b/src/hb-ot-layout.cc
index 0761b8e..0b897d5 100644
--- a/src/hb-ot-layout.cc
+++ b/src/hb-ot-layout.cc
@@ -1557,6 +1557,7 @@
 }
 
 
+#ifndef HB_NO_LAYOUT_FEATURE_PARAMS
 /**
  * hb_ot_layout_get_size_params:
  * @face: #hb_face_t to work upon
@@ -1619,8 +1620,6 @@
 
   return false;
 }
-
-
 /**
  * hb_ot_layout_feature_get_name_ids:
  * @face: #hb_face_t to work upon
@@ -1695,8 +1694,6 @@
   if (first_param_id) *first_param_id = HB_OT_NAME_ID_INVALID;
   return false;
 }
-
-
 /**
  * hb_ot_layout_feature_get_characters:
  * @face: #hb_face_t to work upon
@@ -1750,6 +1747,7 @@
   if (char_count) *char_count = len;
   return cv_params.characters.len;
 }
+#endif
 
 
 /*