Swift: remove table from downgrade properties

Author: rdmarsh2

swift/downgrades/dd1bfe298d87cd82cb0d26e3349ada7244778785/upgrade.properties

@@ -4,7 +4,6 @@ compatibility: backwards
 for_each_stmt_next_calls.rel: delete
 for_each_stmt_iterator_vars.rel: delete
 for_each_stmts.rel: run for_in_downgrade.qlo new_for_each_stmts
-for_each_stmt_iterator_vars.rel: run for_in_downgrade.qlo for_each_stmt_iterator_vars
 pattern_binding_decls.rel: run for_in_downgrade.qlo new_pattern_binding_decls
 pattern_binding_decl_patterns.rel: run for_in_downgrade.qlo new_pattern_binding_decl_patterns
 named_patterns.rel: run for_in_downgrade.qlo new_named_patterns