Removed casting of is_identity since it's already a bool now.

Author: Altonymous

lib/active_record/connection_adapters/sqlserver/schema_statements.rb

@@ -234,7 +234,6 @@ def column_definitions(table_name)
                                  end
             ci[:null] = ci[:is_nullable].to_i == 1 ; ci.delete(:is_nullable)
             ci[:is_primary] = ci[:is_primary].to_i == 1
-            ci[:is_identity] = ci[:is_identity].to_i == 1
             ci
           end
         end