- basic_2: reaxiomatized snv with improved cpds and cpes simplifies preservation

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / substitution / drop.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/substitution/drop.ma b/matita/matita/contribs/lambdadelta/basic_2/substitution/drop.ma
index 32b00b4bc5bf1bf1f72d99b802d3d928e1e0598c..c60891d611714254628e335a9a4b2d37f74b7a5d 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/substitution/drop.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/substitution/drop.ma
@@ -12,7 +12,6 @@
 (*                                                                        *)
 (**************************************************************************)
 
-include "ground_2/lib/bool.ma".
 include "ground_2/lib/lstar.ma".
 include "basic_2/notation/relations/rdrop_5.ma".
 include "basic_2/notation/relations/rdrop_4.ma".