in ppp.te, some property is set for pppoe, since pppoe feature
is phased out, just remove related sepolicy rules
MTK-Commit-Id: 0c0b761b1dc65ddf5375d62ff5ed13d9df6a0e4c
Change-Id: I063224db045b9e57e2b2ad8e8f36ff1ff2b46f18
CR-Id: ALPS04763235
Feature: [Module]IP Networking
Some rules is no need any more, need to remove it.
MTK-Commit-Id: 49685f1299d990a7195a2d54b955517d8f2cc699
Change-Id: I4a590ad781589cf94989ce72c88751ac10b82eae
CR-Id: ALPS03982747
Feature: [Android Default] SELinux, SEAndroid, and SE-MTK
[Detail] Google add new neverallows rules on android P,
some rule violate the rules
[Solution] Remove the rules which violate google new rules
MTK-Commit-Id: ff683b4eee0a6dd95ff25fbb6c7d1fc3a79c604d
Change-Id: Iead494212c6adcec234eaef14c83d1f8c7a49deb
CR-Id: ALPS03825066
Feature: [Android Default] SELinux, SEAndroid, and SE-MTK