init.te: remove domain_deprecated

auditallows have been in place for a while, and no obvious denials.
Remove domain_deprecated from init.te

While I'm here, clean up the formatting of the lines in
domain_deprecated.te.

Bug: 28760354
Test: policy compiles and device boots. No obvious problems.
Change-Id: Ia12e77c3e25990957abf15744e083eed9ffbb056