Fix bug in flow graph builder that caused invalid optimization.

runtime/vm/intermediate_language.cc

Index: runtime/vm/intermediate_language.cc
===================================================================
--- runtime/vm/intermediate_language.cc	(revision 11514)
+++ runtime/vm/intermediate_language.cc	(working copy)
@@ -830,9 +830,6 @@
       (receiver_class_id() == kNumberCid)) {
     return Type::BoolType();
   }
-  if (HasICData() && ic_data()->AllTargetsHaveSameOwner(kInstanceCid)) {
-    return Type::BoolType();
-  }
   return Type::DynamicType();
 }
 
@@ -844,9 +841,6 @@
     // Known/library equalities that are guaranteed to return Boolean.
     return kBoolCid;
   }
-  if (HasICData() && ic_data()->AllTargetsHaveSameOwner(kInstanceCid)) {
-    return kBoolCid;
-  }
   return kDynamicCid;
 }