Revert "Cut off notification string at 5120 chars"

Talked to Andrew about this and the changes in support
should roll in fast enough, so this is unnecessary.

This reverts commit b568ad289b137ebad66684636d94e4e77316fe0b.

Bug: 17363929
Change-Id: Ie62c72fce46f4f590ba6105156ab9bbf2cb636bb
1 file changed