Revert "Ensure that framework does not refer MediaSession2 related code"

This reverts commit 14ca142e65f6fbe61d8db6663768f500c934e737.

Reason for revert: Now the circular dependency problem is resolved, the change is now obsolete.

Bug: 123495968
Change-Id: I5992f9dd205654ce70143773f9ab9bdcafee9ace
2 files changed