soc: qcom: hgsl: remove fence from timeline list on fence release

In case user close fence fd before the fence has been signaled,
we need to make sure to delete it from timeline list before free it.

Change-Id: I1d45110c589e2826ad25367c701c1508ec871e05
Signed-off-by: Jie Feng <jiefeng@codeaurora.org>