tmf: Fix regression in event requests
The following commits introduced a regression, where event
requests for partial ranges would stop working for trace
types that don't define event ranks:
4ca3bebf55c097f872185ac53e18eba4dc88745b
f08203da275a49739af94f6dc1532116d67af593
42eaaef87cf60a5129d64bead5698a84d3d43349
8ed1afa7534fa011991dee35874910f8de01758a
b341bd59ed80f4e848039acc6477ce5711318841
88b2d8d9a2114b2580a1f62c51752754fad39cec
Revert them out of master until they get more testing.
Change-Id: Iee00ba9f1e619737c0406222e607b994301c0ff9
Signed-off-by: Alexandre Montplaisir <alexmonthy@voxpopuli.im>