Remove crash_dump from sys_ptrace neverallow exception

CAP_SYS_PTRACE is no longer used by crash_dump. There's no reason to
exclude it from the neverallow compile time assertion.

Test: policy compiles.
Change-Id: Ib2dced19091406553c16e6ce538cfb68bbc1e5aa
diff --git a/private/domain.te b/private/domain.te
index b1171f4..6f8814e 100644
--- a/private/domain.te
+++ b/private/domain.te
@@ -8,7 +8,6 @@
 neverallow {
   domain
   -vold
-  -crash_dump
   -dumpstate
   -storaged
   -system_server