deleted harmful basify, which pulled rewrite rules down to base type.
Not needed for new simplifier.

--- a/src/LCF/simpdata.ML	Mon Dec 06 17:05:10 1993 +0100
+++ b/src/LCF/simpdata.ML	Thu Dec 09 11:39:33 1993 +0100
@@ -6,23 +6,11 @@
 Simplification data for LCF
 *)
 
-
-fun mk_rew_rules r =
-let fun basify thm =
-	  (case concl_of thm of
-             _$(_$t$_) => (case fastype_of t of
-	                     Type("fun",_) => basify(thm RS ap_thm)
-	                   | _ => thm)
-           | _ => thm)
-in map (mk_meta_eq o basify) (atomize r) end;
-
-val LCF_rews = [minimal,
+val LCF_ss = FOL_ss addsimps
+        [minimal,
 	 UU_app, UU_app RS ap_thm, UU_app RS ap_thm RS ap_thm,
 	 not_TT_less_FF,not_FF_less_TT,not_TT_less_UU,not_FF_less_UU,
 	 not_UU_eq_TT,not_UU_eq_FF,not_TT_eq_UU,not_TT_eq_FF,
 	 not_FF_eq_UU,not_FF_eq_TT,
 	 COND_UU,COND_TT,COND_FF,
 	 surj_pairing,FST,SND];
-
-val LCF_ss = FOL_ss setmksimps mk_rew_rules
-                    addsimps LCF_rews;