toolbox: remove permissive_or_unconfined()

No obvious denials on flounder, the only device where swap
is used.

Change-Id: I5747ad2fd267cb71cbc1f69ffaec6b1e7db9ec1f

toolbox.te

@@ -3,7 +3,6 @@
 # Do NOT use this domain for toolbox when run by any other domain.
 type toolbox, domain;
 type toolbox_exec, exec_type, file_type;
-permissive_or_unconfined(toolbox)
 
 init_daemon_domain(toolbox)