Set the layer composition type in HWC

Setting up the VR hardware composer was causing a call to
setLayerCompositionType with an invalid composition type. This removes the
call, since setting the layer composition type is already handled in
Layer::Prepare().

Bug: 63633934
Test: Start VR mode, check that the logcat errors are no longer present.
Change-Id: I94f9a253bce9c5c25be7927d0003adbb9409ab36
1 file changed