Enable check for delete in Travis-CI

Author: JackStouffer

.dscanner.ini

@@ -8,7 +8,7 @@ enum_array_literal_check="enabled"
 ; Check for poor exception handling practices
 exception_check="disabled" ; FIXME
 ; Check for use of the deprecated 'delete' keyword
-delete_check="disabled" ; FIXME
+delete_check="enabled"
 ; Check for use of the deprecated floating point operators
 float_operator_check="enabled"
 ; Check number literals for readability